THE COLLECTION
A READING ROOM OF IDEAS REASONED ALOUD
What the shelf is made of.
1255 explanations, 127 hours 9 minutes of reading, a median piece of 6 minutes. The table sorts and its columns resize.
By broad domain
25Most-used categories
20 shownEvery explanation
1255| Shelfmark | Explanation | Domain | Min | Terms | Added |
|---|---|---|---|---|---|
| CDA·01 | A calibrated role | Computing, Data & AI | 7 | 3 | 2026-07-26 |
| CDA·02 | A notification you did not ask for | Computing, Data & AI | 7 | 6 | 2026-07-26 |
| PHI·01 | A relic proved false | Philosophy, Ethics & Religion | 6 | 4 | 2026-07-26 |
| CDA·03 | A schema read by two audiences | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| CDA·04 | A secret you never send | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| PHY·01 | A spinning coin's last rattle | Physics | 6 | 3 | 2026-07-26 |
| CDA·05 | A tree in a table of rows | Computing, Data & AI | 7 | 6 | 2026-07-26 |
| CDA·06 | A tree that rearranges itself | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| CDA·07 | A valid token in the wrong place | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| EDU·01 | Ability grouping | Education & Learning | 6 | 4 | 2026-07-26 |
| LAN·01 | Accent and perceived competence | Language, Media & Communication | 6 | 2 | 2026-07-26 |
| CDA·08 | Adding a machine without moving the data | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| CHM·01 | Adhesion | Chemistry & Materials | 6 | 6 | 2026-07-26 |
| FAM·01 | Adolescent risk | Family, Relationships & Human Development | 6 | 4 | 2026-07-26 |
| FAM·02 | Adolescent-parent conflict | Family, Relationships & Human Development | 6 | 3 | 2026-07-26 |
| FAM·03 | Adoption search | Family, Relationships & Human Development | 7 | 1 | 2026-07-26 |
| MIN·01 | Adult attachment patterns | Mind & Behavior | 6 | 4 | 2026-07-26 |
| ECO·01 | Adverse selection | Economics & Business | 6 | 4 | 2026-07-26 |
| ECO·02 | Aftermarket pricing | Economics & Business | 7 | 4 | 2026-07-26 |
| HIS·01 | Age heaping | History, Society & Anthropology | 6 | 1 | 2026-07-26 |
| CDA·09 | Agreeing the shape before the substance | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| ENV·01 | Agroforestry overyielding | Environment, Agriculture & Food | 6 | 4 | 2026-07-26 |
| WRK·01 | Air balancing | Work, Careers & Skilled Trades | 6 | 3 | 2026-07-26 |
| MIL·01 | Airborne drop dispersion | Military, Conflict & Strategic Studies | 6 | 2 | 2026-07-26 |
| ENG·01 | Airplane cabin pressure | Engineering & Technology | 4 | 4 | 2026-07-25 |
| TRV·01 | Airport layout | Travel, Tourism & Hospitality | 6 | 5 | 2026-07-26 |
| TRV·02 | Airport slot grandfathering | Travel, Tourism & Hospitality | 7 | 4 | 2026-07-26 |
| WRK·02 | Alert fatigue | Work, Careers & Skilled Trades | 6 | 4 | 2026-07-26 |
| ENG·02 | Aliasing | Engineering & Technology | 7 | 4 | 2026-07-26 |
| MED·01 | Allergy | Health & Medicine | 6 | 4 | 2026-07-26 |
| CHM·02 | Alloy strength | Chemistry & Materials | 6 | 5 | 2026-07-26 |
| SPT·01 | Altitude training | Sports, Exercise & Recreation | 6 | 4 | 2026-07-26 |
| CHM·03 | Ammonia synthesis | Chemistry & Materials | 6 | 3 | 2026-07-26 |
| MIL·02 | Amphibious buildup | Military, Conflict & Strategic Studies | 6 | 2 | 2026-07-26 |
| EAR·01 | Amphidromic points | Earth, Climate & Oceans | 6 | 3 | 2026-07-26 |
| HIS·02 | Ancient population estimates | History, Society & Anthropology | 6 | 3 | 2026-07-26 |
| PHI·02 | Anonymous giving | Philosophy, Ethics & Religion | 6 | 3 | 2026-07-26 |
| AST·01 | Antarctic meteorite concentration | Astronomy & Space | 6 | 3 | 2026-07-26 |
| EAR·02 | Antarctic ozone hole | Earth, Climate & Oceans | 6 | 2 | 2026-07-26 |
| ENG·03 | Antenna ground plane | Engineering & Technology | 7 | 3 | 2026-07-26 |
| PHY·02 | Anti-reflective coating | Physics | 6 | 3 | 2026-07-26 |
| MED·02 | Antibiotic course length | Health & Medicine | 7 | 4 | 2026-07-26 |
| BIO·01 | Antibody affinity maturation | Biology & Ecology | 6 | 2 | 2026-07-26 |
| MED·03 | Antiviral difficulty | Health & Medicine | 6 | 3 | 2026-07-26 |
| PHI·03 | Apology and repair | Philosophy, Ethics & Religion | 7 | 4 | 2026-07-26 |
| ART·01 | Apparent motion | Arts, Design & Culture | 6 | 4 | 2026-07-26 |
| GOV·01 | Appellate deference | Government, Law & Civics | 6 | 3 | 2026-07-26 |
| HIS·03 | Apprenticeship indentures | History, Society & Anthropology | 6 | 4 | 2026-07-26 |
| CDA·10 | Approximate nearest neighbour search | Computing, Data & AI | 7 | 5 | 2026-07-26 |
| ART·02 | Architectural atmosphere | Arts, Design & Culture | 7 | 4 | 2026-07-26 |
| FAM·04 | Arranged and chosen marriages | Family, Relationships & Human Development | 6 | 0 | 2026-07-26 |
| TRV·03 | Asymmetric flight times | Travel, Tourism & Hospitality | 6 | 4 | 2026-07-26 |
| MIL·03 | Asymmetric warfare | Military, Conflict & Strategic Studies | 6 | 4 | 2026-07-26 |
| SPT·02 | Athlete biological passport | Sports, Exercise & Recreation | 6 | 4 | 2026-07-26 |
| AST·02 | Atmospheric seeing limit | Astronomy & Space | 6 | 4 | 2026-07-26 |
| FAM·05 | Attachment | Family, Relationships & Human Development | 6 | 4 | 2026-07-26 |
| CDA·11 | Attention as a budget | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| MIN·02 | Attribution asymmetry | Mind & Behavior | 6 | 5 | 2026-07-26 |
| ECO·03 | Auction prices | Economics & Business | 5 | 4 | 2026-07-26 |
| AST·03 | Aurora | Astronomy & Space | 6 | 4 | 2026-07-26 |
| TRV·04 | Authenticity | Travel, Tourism & Hospitality | 6 | 4 | 2026-07-26 |
| MED·04 | Autoimmunity | Health & Medicine | 6 | 4 | 2026-07-26 |
| CDA·12 | Autonomy as a dial | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| CHM·04 | Azeotropes | Chemistry & Materials | 6 | 2 | 2026-07-26 |
| CDA·13 | Backfilling a pipeline | Computing, Data & AI | 7 | 5 | 2026-07-26 |
| WRK·03 | Backlash | Work, Careers & Skilled Trades | 6 | 0 | 2026-07-26 |
| CDA·14 | Backpressure | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| CDA·15 | Backward compatibility | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| BIO·02 | Bacterial dormancy | Biology & Ecology | 6 | 4 | 2026-07-26 |
| TRV·05 | Baggage reconciliation | Travel, Tourism & Hospitality | 6 | 4 | 2026-07-26 |
| BIO·03 | Balanced sex ratios | Biology & Ecology | 6 | 4 | 2026-07-26 |
| WRK·04 | Balanced veneer | Work, Careers & Skilled Trades | 6 | 3 | 2026-07-26 |
| PHY·03 | Ballast in a gas discharge | Physics | 7 | 3 | 2026-07-26 |
| ECO·04 | Bank money creation | Economics & Business | 5 | 4 | 2026-07-26 |
| ECO·05 | Bank runs | Economics & Business | 6 | 4 | 2026-07-26 |
| HOM·01 | Bass through walls | Home, Consumer & Everyday Life | 6 | 0 | 2026-07-26 |
| CDA·16 | Batching and the throughput trade | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| ENG·04 | Bathtub failure curve | Engineering & Technology | 6 | 4 | 2026-07-26 |
| HOM·02 | Battery ageing | Home, Consumer & Everyday Life | 6 | 5 | 2026-07-26 |
| MAT·01 | Bayesian updating | Mathematics & Statistics | 4 | 3 | 2026-07-25 |
| MED·05 | Bed rest harm | Health & Medicine | 6 | 3 | 2026-07-26 |
| PHI·04 | Believing at will | Philosophy, Ethics & Religion | 7 | 4 | 2026-07-26 |
| CDA·17 | Benchmark saturation | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| WRK·05 | Bend allowance | Work, Careers & Skilled Trades | 6 | 4 | 2026-07-26 |
| MAT·02 | Benford's law | Mathematics & Statistics | 6 | 4 | 2026-07-26 |
| ART·03 | Bias-cut cloth | Arts, Design & Culture | 6 | 3 | 2026-07-26 |
| PHY·04 | Bicycle stability | Physics | 6 | 3 | 2026-07-26 |
| MIN·03 | Binocular rivalry | Mind & Behavior | 6 | 4 | 2026-07-26 |
| MAT·03 | Birthday problem | Mathematics & Statistics | 5 | 3 | 2026-07-26 |
| WRK·06 | Blameless review | Work, Careers & Skilled Trades | 7 | 4 | 2026-07-26 |
| CDA·18 | Blast radius | Computing, Data & AI | 6 | 6 | 2026-07-26 |
| MAT·04 | Block design existence | Mathematics & Statistics | 6 | 2 | 2026-07-26 |
| MIL·04 | Blockade and resolve | Military, Conflict & Strategic Studies | 6 | 4 | 2026-07-26 |
| MED·06 | Blood compatibility | Health & Medicine | 6 | 5 | 2026-07-26 |
| CDA·19 | Bloom filters | Computing, Data & AI | 7 | 3 | 2026-07-26 |
| MIN·04 | Blushing | Mind & Behavior | 6 | 4 | 2026-07-26 |
| ECO·06 | Board independence | Economics & Business | 6 | 2 | 2026-07-26 |
| TRV·06 | Boarding order | Travel, Tourism & Hospitality | 6 | 0 | 2026-07-26 |
| ENG·05 | Bolt preload | Engineering & Technology | 6 | 3 | 2026-07-26 |
| MED·07 | Bone remodelling | Health & Medicine | 6 | 5 | 2026-07-26 |
| GEO·01 | Border prosperity discontinuity | Geography & Regional Studies | 6 | 2 | 2026-07-26 |
| TRV·07 | Border queue surges | Travel, Tourism & Hospitality | 6 | 3 | 2026-07-26 |
| GEO·02 | Borders | Geography & Regional Studies | 6 | 4 | 2026-07-26 |
| ECO·07 | Boundaries of the firm | Economics & Business | 6 | 4 | 2026-07-26 |
| CDA·20 | Bounded contexts | Computing, Data & AI | 7 | 3 | 2026-07-26 |
| CDA·21 | Branch prediction | Computing, Data & AI | 7 | 2 | 2026-07-26 |
| ECO·08 | Brand advertising | Economics & Business | 6 | 5 | 2026-07-26 |
| PHY·05 | Brazil-nut effect | Physics | 6 | 3 | 2026-07-26 |
| ENV·02 | Bread staling | Environment, Agriculture & Food | 6 | 4 | 2026-07-26 |
| SPT·03 | Breathing urge | Sports, Exercise & Recreation | 5 | 4 | 2026-07-26 |
| PHY·06 | Brewster angle glare | Physics | 6 | 3 | 2026-07-26 |
| HIS·04 | Bridewealth and dowry | History, Society & Anthropology | 6 | 3 | 2026-07-26 |
| GOV·02 | Bright-line rules | Government, Law & Civics | 6 | 5 | 2026-07-26 |
| LAN·02 | Broadcast loudness | Language, Media & Communication | 7 | 4 | 2026-07-26 |
| GOV·03 | Budget scoring windows | Government, Law & Civics | 6 | 3 | 2026-07-26 |
| TRV·08 | Buffet holding time | Travel, Tourism & Hospitality | 6 | 3 | 2026-07-26 |
| CDA·22 | Build cache geometry | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| CDA·23 | Building somewhere you do not ship from | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| ENG·06 | Building sway | Engineering & Technology | 6 | 5 | 2026-07-26 |
| CDA·24 | Built never to be rebuilt | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| CDA·25 | Bulkheads | Computing, Data & AI | 6 | 2 | 2026-07-26 |
| ECO·09 | Bullwhip effect | Economics & Business | 6 | 4 | 2026-07-26 |
| PHY·07 | Buoyancy | Physics | 6 | 4 | 2026-07-26 |
| PHI·05 | Burden of proof | Philosophy, Ethics & Religion | 6 | 4 | 2026-07-26 |
| CHM·05 | Butter from cream | Chemistry & Materials | 6 | 4 | 2026-07-26 |
| MIN·05 | Bystander effect | Mind & Behavior | 6 | 4 | 2026-07-26 |
| CDA·26 | Caching | Computing, Data & AI | 6 | 6 | 2026-07-26 |
| CDA·27 | Caching an answer nobody asked for exactly | Computing, Data & AI | 7 | 5 | 2026-07-26 |
| GEO·03 | Cadastral survey patterns | Geography & Regional Studies | 7 | 4 | 2026-07-26 |
| HIS·05 | Calendar drift | History, Society & Anthropology | 6 | 5 | 2026-07-26 |
| CHM·06 | Candle wick | Chemistry & Materials | 6 | 5 | 2026-07-26 |
| ART·04 | Canon formation | Arts, Design & Culture | 6 | 4 | 2026-07-26 |
| CDA·28 | Capability negotiation | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| ENG·07 | Capacitive sensing | Engineering & Technology | 6 | 5 | 2026-07-26 |
| CHM·07 | Carbon allotropes | Chemistry & Materials | 6 | 5 | 2026-07-26 |
| FAM·06 | Caregiver of last resort | Family, Relationships & Human Development | 7 | 0 | 2026-07-26 |
| FAM·07 | Caregiving load | Family, Relationships & Human Development | 6 | 3 | 2026-07-26 |
| MED·08 | Cartilage healing | Health & Medicine | 7 | 4 | 2026-07-26 |
| SPT·04 | Carving ski sidecut | Sports, Exercise & Recreation | 6 | 4 | 2026-07-26 |
| ENV·03 | Cassava processing | Environment, Agriculture & Food | 7 | 3 | 2026-07-26 |
| CHM·08 | Cast-iron seasoning | Chemistry & Materials | 6 | 4 | 2026-07-26 |
| MIL·05 | Casualty evacuation | Military, Conflict & Strategic Studies | 6 | 2 | 2026-07-26 |
| CHM·09 | Catalysis | Chemistry & Materials | 6 | 5 | 2026-07-26 |
| ECO·10 | Catastrophe reinsurance | Economics & Business | 6 | 2 | 2026-07-26 |
| MAT·05 | Catastrophic cancellation | Mathematics & Statistics | 6 | 3 | 2026-07-26 |
| EAR·03 | Cave formation | Earth, Climate & Oceans | 6 | 6 | 2026-07-26 |
| ART·05 | Cello wolf tone | Arts, Design & Culture | 6 | 3 | 2026-07-26 |
| MAT·06 | Cellular automata | Mathematics & Statistics | 6 | 3 | 2026-07-26 |
| CHM·10 | Cement hardening | Chemistry & Materials | 6 | 5 | 2026-07-26 |
| MAT·07 | Censored follow-up | Mathematics & Statistics | 6 | 4 | 2026-07-26 |
| GOV·04 | Census undercount | Government, Law & Civics | 6 | 5 | 2026-07-26 |
| MED·09 | Central sensitization | Health & Medicine | 6 | 4 | 2026-07-26 |
| HIS·06 | Ceramic seriation | History, Society & Anthropology | 7 | 4 | 2026-07-26 |
| WRK·07 | Ceremony as a smell | Work, Careers & Skilled Trades | 7 | 3 | 2026-07-26 |
| CHM·11 | Chain-branching explosion limits | Chemistry & Materials | 7 | 4 | 2026-07-26 |
| CDA·29 | Chain-of-thought | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| CDA·30 | Change data capture | Computing, Data & AI | 7 | 6 | 2026-07-26 |
| CDA·31 | Chaos engineering | Computing, Data & AI | 7 | 4 | 2026-07-26 |
| HOM·03 | Charm pricing | Home, Consumer & Everyday Life | 6 | 4 | 2026-07-26 |
| ENV·04 | Cheese ripening | Environment, Agriculture & Food | 7 | 0 | 2026-07-26 |
| CHM·12 | Chelate effect | Chemistry & Materials | 6 | 2 | 2026-07-26 |
| MIL·06 | Chemical protective posture | Military, Conflict & Strategic Studies | 6 | 4 | 2026-07-26 |
| MED·10 | Chemotherapy selectivity | Health & Medicine | 6 | 3 | 2026-07-26 |
| FAM·08 | Child fostering | Family, Relationships & Human Development | 6 | 1 | 2026-07-26 |
| FAM·09 | Child word learning | Family, Relationships & Human Development | 5 | 3 | 2026-07-26 |
| FAM·10 | Children's play | Family, Relationships & Human Development | 6 | 4 | 2026-07-26 |
| ENV·05 | Chilling injury in fruit | Environment, Agriculture & Food | 6 | 4 | 2026-07-26 |
| ENG·08 | Chip yield and die size | Engineering & Technology | 6 | 0 | 2026-07-26 |
| MIN·06 | Choice overload | Mind & Behavior | 6 | 4 | 2026-07-26 |
| SPT·05 | Choking under attention | Sports, Exercise & Recreation | 6 | 4 | 2026-07-26 |
| CDA·32 | Choosing an indicator | Computing, Data & AI | 7 | 3 | 2026-07-26 |
| CDA·33 | Choosing the first piece to replace | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| CDA·34 | Choosing what to forget | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| CDA·35 | Choreography versus orchestration | Computing, Data & AI | 7 | 4 | 2026-07-26 |
| CDA·36 | Chunking | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| CDA·37 | Circuit breakers | Computing, Data & AI | 6 | 2 | 2026-07-26 |
| CDA·38 | Citation without verification | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| GEO·04 | City location | Geography & Regional Studies | 5 | 3 | 2026-07-26 |
| GOV·05 | Civil service tenure | Government, Law & Civics | 6 | 3 | 2026-07-26 |
| MIL·07 | Civilian control | Military, Conflict & Strategic Studies | 6 | 4 | 2026-07-26 |
| EDU·02 | Class-size cutoff rules | Education & Learning | 6 | 4 | 2026-07-26 |
| EDU·03 | Classroom misconceptions | Education & Learning | 5 | 4 | 2026-07-26 |
| LAN·03 | Clickbait headlines | Language, Media & Communication | 7 | 0 | 2026-07-26 |
| SPT·06 | Climbing grade drift | Sports, Exercise & Recreation | 6 | 4 | 2026-07-26 |
| SPT·07 | Climbing versus descending weight | Sports, Exercise & Recreation | 6 | 4 | 2026-07-26 |
| CDA·39 | Clock synchronization | Computing, Data & AI | 6 | 3 | 2026-07-26 |
| HOM·04 | Cloudy ice cubes | Home, Consumer & Everyday Life | 6 | 3 | 2026-07-26 |
| HOM·05 | Clutter | Home, Consumer & Everyday Life | 6 | 4 | 2026-07-26 |
| GOV·06 | Coalition formation | Government, Law & Civics | 6 | 3 | 2026-07-26 |
| MIL·08 | Coalition friction | Military, Conflict & Strategic Studies | 6 | 0 | 2026-07-26 |
| EAR·04 | Coastal dead zones | Earth, Climate & Oceans | 6 | 4 | 2026-07-26 |
| GEO·05 | Coastal fog belts | Geography & Regional Studies | 7 | 3 | 2026-07-26 |
| MAT·08 | Coastline paradox | Mathematics & Statistics | 6 | 4 | 2026-07-26 |
| MIN·07 | Cocktail party effect | Mind & Behavior | 6 | 4 | 2026-07-26 |
| CDA·40 | Code that never runs, and code that runs once a year | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| MIN·08 | Cognitive dissonance | Mind & Behavior | 7 | 3 | 2026-07-26 |
| BIO·04 | Cohesion-tension sap ascent | Biology & Ecology | 6 | 4 | 2026-07-26 |
| HOM·06 | Coiled extension lead | Home, Consumer & Everyday Life | 6 | 3 | 2026-07-26 |
| HOM·07 | Cold floors | Home, Consumer & Everyday Life | 6 | 4 | 2026-07-26 |
| CDA·41 | Cold starts | Computing, Data & AI | 7 | 6 | 2026-07-26 |
| HOM·08 | Cold-spot condensation | Home, Consumer & Everyday Life | 6 | 0 | 2026-07-26 |
| CDA·42 | Collecting changes before committing them | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| BIO·05 | Collective ant behavior | Biology & Ecology | 5 | 4 | 2026-07-26 |
| PHI·06 | Collective responsibility | Philosophy, Ethics & Religion | 6 | 2 | 2026-07-26 |
| CHM·13 | Colloid flocculation | Chemistry & Materials | 6 | 2 | 2026-07-26 |
| ART·06 | Color mixing | Arts, Design & Culture | 6 | 4 | 2026-07-26 |
| MIL·09 | Combatant identification | Military, Conflict & Strategic Studies | 6 | 4 | 2026-07-26 |
| AST·04 | Comet tails | Astronomy & Space | 6 | 4 | 2026-07-26 |
| CDA·43 | Commands and events | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| GEO·06 | Common high pasture | Geography & Regional Studies | 6 | 3 | 2026-07-26 |
| ECO·11 | Comparative advantage | Economics & Business | 5 | 3 | 2026-07-26 |
| CDA·44 | Compatibility has a direction | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| MED·11 | Compensated shock | Health & Medicine | 6 | 0 | 2026-07-26 |
| MAT·09 | Completing a collection | Mathematics & Statistics | 6 | 3 | 2026-07-26 |
| MAT·10 | Compositeness without factors | Mathematics & Statistics | 7 | 5 | 2026-07-26 |
| CDA·45 | Composition over inheritance | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| ENV·06 | Compost heat | Environment, Agriculture & Food | 6 | 4 | 2026-07-26 |
| ECO·12 | Compound interest | Economics & Business | 6 | 5 | 2026-07-25 |
| GEO·07 | Compromise capitals | Geography & Regional Studies | 6 | 2 | 2026-07-26 |
| GOV·07 | Compulsory taxation | Government, Law & Civics | 6 | 5 | 2026-07-26 |
| ART·07 | Concert hall reverberation | Arts, Design & Culture | 6 | 5 | 2026-07-26 |
| ART·08 | Concert pitch standard | Arts, Design & Culture | 7 | 3 | 2026-07-26 |
| GOV·08 | Conditional spending grants | Government, Law & Civics | 6 | 3 | 2026-07-26 |
| CDA·46 | Confident model errors | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| CDA·47 | Configuration drift | Computing, Data & AI | 6 | 3 | 2026-07-26 |
| MIN·09 | Conformity | Mind & Behavior | 6 | 4 | 2026-07-26 |
| MAT·11 | Confounded factorial effects | Mathematics & Statistics | 6 | 2 | 2026-07-26 |
| CDA·48 | Congestion collapse | Computing, Data & AI | 6 | 3 | 2026-07-26 |
| CDA·49 | Connection exhaustion before CPU | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| HIS·07 | Conspicuous display | History, Society & Anthropology | 6 | 4 | 2026-07-26 |
| BIO·06 | Conspicuous signals | Biology & Ecology | 6 | 4 | 2026-07-26 |
| GOV·09 | Constitutional entrenchment | Government, Law & Civics | 6 | 5 | 2026-07-26 |
| MIN·10 | Contagious yawning | Mind & Behavior | 6 | 3 | 2026-07-26 |
| CDA·50 | Content delivery networks | Computing, Data & AI | 7 | 1 | 2026-07-26 |
| CDA·51 | Context window | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| TRV·09 | Contingency fuel | Travel, Tourism & Hospitality | 6 | 5 | 2026-07-26 |
| ART·09 | Continuity editing | Arts, Design & Culture | 6 | 3 | 2026-07-26 |
| CDA·52 | Continuity over a protocol with no memory | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| CDA·53 | Control as a classification | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| CDA·54 | Control plane and data plane | Computing, Data & AI | 7 | 5 | 2026-07-26 |
| PHY·08 | Convection cells | Physics | 6 | 3 | 2026-07-26 |
| BIO·07 | Convergent evolution | Biology & Ecology | 6 | 4 | 2026-07-26 |
| LAN·04 | Conversation turn-taking | Language, Media & Communication | 5 | 3 | 2026-07-26 |
| MIL·10 | Convoy protection | Military, Conflict & Strategic Studies | 6 | 0 | 2026-07-26 |
| HOM·09 | Cooling a room with a fridge | Home, Consumer & Everyday Life | 6 | 4 | 2026-07-26 |
| GEO·08 | Cooling with altitude | Geography & Regional Studies | 6 | 5 | 2026-07-26 |
| WRK·08 | Coordination cost | Work, Careers & Skilled Trades | 6 | 4 | 2026-07-26 |
| CDA·55 | Copying something you can only question | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| EAR·05 | Coral bleaching | Earth, Climate & Oceans | 6 | 4 | 2026-07-26 |
| MAT·12 | Corner solutions | Mathematics & Statistics | 7 | 4 | 2026-07-26 |
| CHM·14 | Corrosion | Chemistry & Materials | 5 | 5 | 2026-07-26 |
| CDA·56 | CORS in the web | Computing, Data & AI | 6 | 6 | 2026-07-25 |
| ENV·07 | Cosmetic produce standards | Environment, Agriculture & Food | 7 | 3 | 2026-07-26 |
| AST·05 | Cosmic distance ladder | Astronomy & Space | 7 | 4 | 2026-07-26 |
| ECO·13 | Cost disease | Economics & Business | 6 | 3 | 2026-07-26 |
| BIO·08 | Cost of sexual reproduction | Biology & Ecology | 6 | 4 | 2026-07-26 |
| PHI·07 | Costly religious demands | Philosophy, Ethics & Religion | 6 | 4 | 2026-07-26 |
| BIO·09 | Countercurrent heat exchange | Biology & Ecology | 6 | 4 | 2026-07-26 |
| CDA·57 | Counting steps instead of timing | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| CDA·58 | Coupling | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| PHY·09 | Cracked bell tone | Physics | 7 | 3 | 2026-07-26 |
| WRK·09 | Crane signalling | Work, Careers & Skilled Trades | 7 | 0 | 2026-07-26 |
| EDU·04 | Credential inflation | Education & Learning | 6 | 3 | 2026-07-26 |
| ECO·14 | Credit | Economics & Business | 6 | 4 | 2026-07-26 |
| LAN·05 | Creole genesis | Language, Media & Communication | 6 | 4 | 2026-07-26 |
| CHM·15 | Crevice corrosion | Chemistry & Materials | 6 | 2 | 2026-07-26 |
| PHY·10 | Critical mass | Physics | 6 | 5 | 2026-07-26 |
| ENV·08 | Crop rotation | Environment, Agriculture & Food | 5 | 3 | 2026-07-26 |
| HIS·08 | Cross-cousin marriage | History, Society & Anthropology | 6 | 4 | 2026-07-26 |
| ECO·15 | Cross-docking | Economics & Business | 6 | 4 | 2026-07-26 |
| MIN·11 | Crowd crush | Mind & Behavior | 7 | 4 | 2026-07-26 |
| TRV·10 | Cruise call clustering | Travel, Tourism & Hospitality | 6 | 2 | 2026-07-26 |
| ENG·09 | Crumple zones | Engineering & Technology | 6 | 3 | 2026-07-26 |
| MIL·11 | Culminating point of an offensive | Military, Conflict & Strategic Studies | 7 | 0 | 2026-07-26 |
| ECO·16 | Currency peg collapse | Economics & Business | 6 | 3 | 2026-07-26 |
| MAT·13 | Curse of dimensionality | Mathematics & Statistics | 6 | 4 | 2026-07-26 |
| EDU·05 | Curse of knowledge in teaching | Education & Learning | 6 | 3 | 2026-07-26 |
| EDU·06 | Cut scores on licensing exams | Education & Learning | 6 | 2 | 2026-07-26 |
| MAT·14 | Cyclic majorities | Mathematics & Statistics | 6 | 3 | 2026-07-26 |
| ENV·09 | Dairy cow energy balance | Environment, Agriculture & Food | 6 | 4 | 2026-07-26 |
| MIN·12 | Dark adaptation | Mind & Behavior | 6 | 3 | 2026-07-26 |
| AST·06 | Dark night sky | Astronomy & Space | 5 | 4 | 2026-07-26 |
| CDA·59 | Data contracts | Computing, Data & AI | 7 | 5 | 2026-07-26 |
| CDA·60 | Data leakage paths | Computing, Data & AI | 7 | 4 | 2026-07-26 |
| CDA·61 | Data you keep is data you can lose | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| CDA·62 | Database transactions | Computing, Data & AI | 4 | 4 | 2026-07-25 |
| MIN·13 | Dawn light and the body clock | Mind & Behavior | 6 | 3 | 2026-07-26 |
| CDA·63 | Dead or just slow? | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| ART·10 | Death and art prices | Arts, Design & Culture | 6 | 4 | 2026-07-26 |
| CDA·64 | Deciding apart from enforcing | Computing, Data & AI | 6 | 6 | 2026-07-26 |
| MIN·14 | Decision fatigue | Mind & Behavior | 6 | 5 | 2026-07-26 |
| CDA·65 | Declaring the destination, not the route | Computing, Data & AI | 6 | 3 | 2026-07-26 |
| EAR·06 | Deep sound channel | Earth, Climate & Oceans | 6 | 2 | 2026-07-26 |
| MIL·12 | Defender's advantage | Military, Conflict & Strategic Studies | 6 | 3 | 2026-07-26 |
| MIN·15 | Deja vu | Mind & Behavior | 6 | 4 | 2026-07-26 |
| MIN·16 | Delay discounting | Mind & Behavior | 6 | 3 | 2026-07-26 |
| SPT·08 | Delayed muscle soreness | Sports, Exercise & Recreation | 5 | 3 | 2026-07-26 |
| ENG·10 | Delayed weld cracking | Engineering & Technology | 7 | 3 | 2026-07-26 |
| MIL·13 | Delegated launch authority | Military, Conflict & Strategic Studies | 6 | 3 | 2026-07-26 |
| CDA·66 | Delegation without the password | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| WRK·10 | Deliberate practice | Work, Careers & Skilled Trades | 4 | 3 | 2026-07-26 |
| CDA·67 | Deliberately slow password checks | Computing, Data & AI | 6 | 3 | 2026-07-26 |
| CDA·68 | Delimiters as a boundary | Computing, Data & AI | 7 | 3 | 2026-07-26 |
| CDA·69 | Delivered versus retained | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| GEO·09 | Delta subsidence | Geography & Regional Studies | 6 | 3 | 2026-07-26 |
| CDA·70 | Denormalization | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| CDA·71 | Dependency conflicts | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| CDA·72 | Dependency direction | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| CDA·73 | Deploying more to break less | Computing, Data & AI | 7 | 4 | 2026-07-26 |
| EAR·07 | Depth hoar in snowpack | Earth, Climate & Oceans | 6 | 4 | 2026-07-26 |
| GEO·10 | Desert latitudes | Geography & Regional Studies | 6 | 5 | 2026-07-26 |
| CDA·74 | Design by contract | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| ART·11 | Design restraint | Arts, Design & Culture | 6 | 4 | 2026-07-26 |
| CDA·75 | Detecting a theft you cannot see | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| CHM·16 | Detection limits | Chemistry & Materials | 6 | 4 | 2026-07-26 |
| MIL·14 | Deterrence | Military, Conflict & Strategic Studies | 6 | 5 | 2026-07-26 |
| GOV·10 | Devolved authority | Government, Law & Civics | 6 | 0 | 2026-07-26 |
| MED·12 | Diabetic complications | Health & Medicine | 6 | 4 | 2026-07-26 |
| EDU·07 | Diagnostic distractors | Education & Learning | 6 | 4 | 2026-07-26 |
| TRV·11 | Different prices, same room | Travel, Tourism & Hospitality | 6 | 5 | 2026-07-26 |
| LAN·06 | Digital preservation churn | Language, Media & Communication | 6 | 4 | 2026-07-26 |
| ENV·10 | Diminishing fertiliser returns | Environment, Agriculture & Food | 6 | 4 | 2026-07-26 |
| CHM·17 | Disappearing polymorphs | Chemistry & Materials | 6 | 3 | 2026-07-26 |
| HOM·10 | Dishwasher drying | Home, Consumer & Everyday Life | 6 | 3 | 2026-07-26 |
| CDA·76 | Distributed consensus | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| CDA·77 | Distributed tracing | Computing, Data & AI | 7 | 3 | 2026-07-26 |
| GOV·11 | District boundaries | Government, Law & Civics | 6 | 4 | 2026-07-26 |
| FAM·11 | Divorce contagion | Family, Relationships & Human Development | 6 | 3 | 2026-07-26 |
| MIL·15 | Doctrine lag | Military, Conflict & Strategic Studies | 6 | 3 | 2026-07-26 |
| CDA·78 | Documentation that points at its evidence | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| PHI·08 | Doing versus allowing | Philosophy, Ethics & Religion | 6 | 3 | 2026-07-26 |
| HIS·09 | Domestication | History, Society & Anthropology | 6 | 5 | 2026-07-26 |
| MIN·17 | Doorway effect | Mind & Behavior | 6 | 3 | 2026-07-26 |
| SPT·09 | Doping arms race | Sports, Exercise & Recreation | 7 | 0 | 2026-07-26 |
| PHY·11 | Doppler effect | Physics | 6 | 3 | 2026-07-26 |
| MED·13 | Dose-response | Health & Medicine | 6 | 4 | 2026-07-26 |
| CDA·79 | Double descent | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| GEO·11 | Downdrift beach loss | Geography & Regional Studies | 6 | 4 | 2026-07-26 |
| SPT·10 | Drafting in the peloton | Sports, Exercise & Recreation | 6 | 3 | 2026-07-26 |
| WRK·11 | Drain fall | Work, Careers & Skilled Trades | 6 | 0 | 2026-07-26 |
| CDA·80 | Drawing the same model three times | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| MAT·15 | Dropping incomplete records | Mathematics & Statistics | 6 | 5 | 2026-07-26 |
| MED·14 | Drug tolerance | Health & Medicine | 6 | 4 | 2026-07-26 |
| HOM·11 | Dry drain trap | Home, Consumer & Everyday Life | 6 | 4 | 2026-07-26 |
| ART·12 | Drypoint burr | Arts, Design & Culture | 6 | 3 | 2026-07-26 |
| CDA·81 | Durable execution | Computing, Data & AI | 7 | 4 | 2026-07-26 |
| EAR·08 | Dust-fed rainforests | Earth, Climate & Oceans | 7 | 4 | 2026-07-26 |
| LAN·07 | Ear-voice span | Language, Media & Communication | 7 | 0 | 2026-07-26 |
| SPT·11 | Early sport specialization | Sports, Exercise & Recreation | 6 | 4 | 2026-07-26 |
| SPT·12 | Early strength gains | Sports, Exercise & Recreation | 6 | 5 | 2026-07-26 |
| ART·13 | Earworms | Arts, Design & Culture | 6 | 4 | 2026-07-26 |
| HIS·10 | East-west diffusion | History, Society & Anthropology | 6 | 4 | 2026-07-26 |
| AST·07 | Eclipse seasons | Astronomy & Space | 6 | 3 | 2026-07-26 |
| BIO·10 | Ecological succession | Biology & Ecology | 6 | 3 | 2026-07-26 |
| PHI·09 | Effortless virtue | Philosophy, Ethics & Religion | 7 | 4 | 2026-07-26 |
| EAR·09 | El Nino oscillation | Earth, Climate & Oceans | 6 | 3 | 2026-07-26 |
| CDA·82 | Embedding space | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| GOV·12 | Emergency powers ratchet | Government, Law & Civics | 6 | 2 | 2026-07-26 |
| MED·15 | Emergency triage | Health & Medicine | 6 | 4 | 2026-07-26 |
| ART·14 | Emerging pentimenti | Arts, Design & Culture | 6 | 4 | 2026-07-26 |
| GOV·13 | Eminent domain compensation | Government, Law & Civics | 6 | 0 | 2026-07-26 |
| MIL·16 | Emissions control | Military, Conflict & Strategic Studies | 6 | 4 | 2026-07-26 |
| ECO·17 | Empty container repositioning | Economics & Business | 6 | 2 | 2026-07-26 |
| GEO·12 | Enclaves | Geography & Regional Studies | 6 | 3 | 2026-07-26 |
| GEO·13 | Endorheic basins | Geography & Regional Studies | 6 | 4 | 2026-07-26 |
| GOV·14 | Enforcement discretion | Government, Law & Civics | 6 | 3 | 2026-07-26 |
| ENG·11 | Engine run-in | Engineering & Technology | 7 | 0 | 2026-07-26 |
| ENG·12 | Engineered redundancy | Engineering & Technology | 5 | 3 | 2026-07-26 |
| MAT·16 | Envy-free division | Mathematics & Statistics | 7 | 3 | 2026-07-26 |
| CHM·18 | Enzyme specificity | Chemistry & Materials | 3 | 3 | 2026-07-25 |
| SPT·13 | Equipment bans in sport | Sports, Exercise & Recreation | 6 | 4 | 2026-07-26 |
| CDA·83 | Error budgets | Computing, Data & AI | 7 | 3 | 2026-07-26 |
| MAT·17 | Error cancellation in averages | Mathematics & Statistics | 6 | 5 | 2026-07-26 |
| CDA·84 | Error-correcting codes | Computing, Data & AI | 4 | 4 | 2026-07-25 |
| MIL·17 | Escalation | Military, Conflict & Strategic Studies | 7 | 4 | 2026-07-26 |
| LAN·08 | Euphemism | Language, Media & Communication | 6 | 4 | 2026-07-26 |
| CDA·85 | Evaluating retrieval separately | Computing, Data & AI | 7 | 5 | 2026-07-26 |
| CDA·86 | Evaluation suites | Computing, Data & AI | 7 | 4 | 2026-07-26 |
| HOM·12 | Evaporative drying | Home, Consumer & Everyday Life | 6 | 5 | 2026-07-26 |
| SPT·14 | Even pacing | Sports, Exercise & Recreation | 6 | 4 | 2026-07-26 |
| CDA·87 | Event sourcing | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| CDA·88 | Event time versus arrival time | Computing, Data & AI | 7 | 5 | 2026-07-26 |
| CDA·89 | Eventual consistency | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| GOV·15 | Everyday legal compliance | Government, Law & Civics | 6 | 4 | 2026-07-26 |
| CDA·90 | Exactly once is a property of the pipeline | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| EDU·08 | Exam equating | Education & Learning | 7 | 4 | 2026-07-26 |
| GOV·16 | Exclusionary rule | Government, Law & Civics | 6 | 4 | 2026-07-26 |
| SPT·15 | Exercise-associated hyponatremia | Sports, Exercise & Recreation | 6 | 4 | 2026-07-26 |
| LAN·09 | Exonyms | Language, Media & Communication | 6 | 4 | 2026-07-26 |
| AST·08 | Exoplanet detection | Astronomy & Space | 6 | 4 | 2026-07-26 |
| ECO·18 | Experience rating | Economics & Business | 6 | 2 | 2026-07-26 |
| ECO·19 | Experience-curve pricing | Economics & Business | 6 | 3 | 2026-07-26 |
| WRK·12 | Experienced-worker injuries | Work, Careers & Skilled Trades | 6 | 4 | 2026-07-26 |
| EDU·09 | Expertise reversal | Education & Learning | 6 | 4 | 2026-07-26 |
| ART·15 | Explained jokes | Arts, Design & Culture | 6 | 4 | 2026-07-26 |
| ECO·20 | Exposure problem in package bidding | Economics & Business | 7 | 2 | 2026-07-26 |
| HOM·13 | Fabric softener and absorbency | Home, Consumer & Everyday Life | 6 | 0 | 2026-07-26 |
| MIN·18 | Face recognition | Mind & Behavior | 4 | 4 | 2026-07-25 |
| MAT·18 | Factorial explosion | Mathematics & Statistics | 6 | 5 | 2026-07-26 |
| MIL·18 | Fading advantage of a new weapon | Military, Conflict & Strategic Studies | 6 | 4 | 2026-07-26 |
| FAM·12 | Fading attraction | Family, Relationships & Human Development | 6 | 4 | 2026-07-26 |
| ENG·13 | Fail-safe braking | Engineering & Technology | 6 | 3 | 2026-07-26 |
| CDA·91 | Failing fast | Computing, Data & AI | 7 | 4 | 2026-07-26 |
| WRK·13 | Failure after repair | Work, Careers & Skilled Trades | 6 | 4 | 2026-07-26 |
| MAT·19 | Fair lottery over the integers | Mathematics & Statistics | 7 | 2 | 2026-07-26 |
| PHI·10 | Faith and evidence | Philosophy, Ethics & Religion | 6 | 4 | 2026-07-26 |
| GEO·14 | Fall-line cities | Geography & Regional Studies | 6 | 4 | 2026-07-26 |
| SPT·16 | Falling records | Sports, Exercise & Recreation | 6 | 4 | 2026-07-26 |
| CDA·92 | False sharing | Computing, Data & AI | 6 | 2 | 2026-07-26 |
| FAM·13 | Family estrangement | Family, Relationships & Human Development | 6 | 3 | 2026-07-26 |
| HIS·11 | Famine amid plenty | History, Society & Anthropology | 6 | 3 | 2026-07-26 |
| PHY·12 | Faraday cage | Physics | 7 | 3 | 2026-07-26 |
| ART·16 | Fashion churn | Arts, Design & Culture | 6 | 4 | 2026-07-26 |
| PHI·11 | Fasting | Philosophy, Ethics & Religion | 6 | 3 | 2026-07-26 |
| CDA·93 | Feature flags | Computing, Data & AI | 6 | 3 | 2026-07-26 |
| CDA·94 | Federated data ownership | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| ENG·14 | Feedback control | Engineering & Technology | 6 | 5 | 2026-07-26 |
| EDU·10 | Feedback timing | Education & Learning | 6 | 4 | 2026-07-26 |
| MIL·19 | Feigned retreat | Military, Conflict & Strategic Studies | 6 | 4 | 2026-07-26 |
| HIS·12 | Festival calendars | History, Society & Anthropology | 6 | 4 | 2026-07-26 |
| MED·16 | Fever | Health & Medicine | 3 | 3 | 2026-07-25 |
| CDA·95 | Few-shot prompting | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| CDA·96 | Fewer operations, slower program | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| CHM·19 | Fibre strength and flaws | Chemistry & Materials | 6 | 4 | 2026-07-26 |
| SPT·17 | Figure-skating spin | Sports, Exercise & Recreation | 5 | 3 | 2026-07-26 |
| CDA·97 | File deletion | Computing, Data & AI | 6 | 6 | 2026-07-26 |
| LAN·10 | Filler words | Language, Media & Communication | 6 | 4 | 2026-07-26 |
| CDA·98 | Finding without searching | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| CDA·99 | Fine-tuning versus retrieval | Computing, Data & AI | 7 | 5 | 2026-07-26 |
| MED·17 | First-pass metabolism | Health & Medicine | 6 | 3 | 2026-07-26 |
| ENV·11 | Fish spoiling fast | Environment, Agriculture & Food | 6 | 4 | 2026-07-26 |
| ENV·12 | Fishery collapse | Environment, Agriculture & Food | 6 | 4 | 2026-07-26 |
| CHM·20 | Flame emission colours | Chemistry & Materials | 6 | 4 | 2026-07-26 |
| HOM·14 | Flat-pack bracing | Home, Consumer & Everyday Life | 7 | 0 | 2026-07-26 |
| MIL·20 | Fleet in being | Military, Conflict & Strategic Studies | 6 | 4 | 2026-07-26 |
| WRK·14 | Floating panels | Work, Careers & Skilled Trades | 6 | 0 | 2026-07-26 |
| CDA·100 | Floating-point error | Computing, Data & AI | 4 | 3 | 2026-07-25 |
| EDU·11 | Fluency illusion | Education & Learning | 6 | 4 | 2026-07-26 |
| MIL·21 | Fog of war | Military, Conflict & Strategic Studies | 6 | 4 | 2026-07-26 |
| ART·17 | Folk craft regionalism | Arts, Design & Culture | 6 | 4 | 2026-07-26 |
| ENV·13 | Food miles | Environment, Agriculture & Food | 6 | 4 | 2026-07-26 |
| ENV·14 | Food preservation | Environment, Agriculture & Food | 5 | 3 | 2026-07-26 |
| SPT·18 | Forearm pump in climbing | Sports, Exercise & Recreation | 6 | 4 | 2026-07-26 |
| EAR·10 | Forecast horizon | Earth, Climate & Oceans | 6 | 5 | 2026-07-26 |
| BIO·11 | Forest height race | Biology & Ecology | 6 | 5 | 2026-07-26 |
| HIS·13 | Formulaic oral composition | History, Society & Anthropology | 6 | 4 | 2026-07-26 |
| CDA·101 | Foundation model economics | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| LAN·11 | Framing | Language, Media & Communication | 6 | 4 | 2026-07-26 |
| PHI·12 | Free will | Philosophy, Ethics & Religion | 6 | 4 | 2026-07-26 |
| HOM·15 | Freezer burn | Home, Consumer & Everyday Life | 6 | 3 | 2026-07-26 |
| CHM·21 | Freezing-point depression | Chemistry & Materials | 5 | 3 | 2026-07-26 |
| TRV·12 | Frequent-flyer currency | Travel, Tourism & Hospitality | 7 | 4 | 2026-07-26 |
| HOM·16 | Full freezer efficiency | Home, Consumer & Everyday Life | 7 | 0 | 2026-07-26 |
| GEO·15 | Functional versus administrative regions | Geography & Regional Studies | 6 | 3 | 2026-07-26 |
| AST·09 | Galaxy rotation curves | Astronomy & Space | 6 | 4 | 2026-07-26 |
| ART·18 | Gamelan tuning | Arts, Design & Culture | 6 | 4 | 2026-07-26 |
| CDA·102 | Garbage collection pauses | Computing, Data & AI | 6 | 3 | 2026-07-26 |
| MED·18 | General anaesthesia | Health & Medicine | 6 | 3 | 2026-07-26 |
| GEO·16 | Gentrification | Geography & Regional Studies | 6 | 4 | 2026-07-26 |
| EAR·11 | Geostrophic wind | Earth, Climate & Oceans | 6 | 5 | 2026-07-26 |
| HOM·17 | Ghost glow in LED bulbs | Home, Consumer & Everyday Life | 6 | 3 | 2026-07-26 |
| HIS·14 | Gift obligation | History, Society & Anthropology | 6 | 3 | 2026-07-26 |
| LAN·12 | Given-name fashions | Language, Media & Communication | 6 | 2 | 2026-07-26 |
| EAR·12 | Glacier flow | Earth, Climate & Oceans | 6 | 5 | 2026-07-26 |
| CHM·22 | Glass transition | Chemistry & Materials | 7 | 1 | 2026-07-26 |
| PHY·13 | Glass transparency | Physics | 3 | 2 | 2026-07-25 |
| SPT·19 | Golf ball dimples | Sports, Exercise & Recreation | 6 | 4 | 2026-07-26 |
| CDA·103 | Grade earned, not declared | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| EDU·12 | Grade inflation | Education & Learning | 6 | 4 | 2026-07-26 |
| EDU·13 | Grade retention | Education & Learning | 7 | 3 | 2026-07-26 |
| HIS·15 | Grain and taxation | History, Society & Anthropology | 7 | 4 | 2026-07-26 |
| ENV·15 | Grain bin hot spots | Environment, Agriculture & Food | 6 | 3 | 2026-07-26 |
| LAN·13 | Grammatical evidentiality | Language, Media & Communication | 6 | 4 | 2026-07-26 |
| FAM·14 | Grandmother proximity and fertility | Family, Relationships & Human Development | 7 | 3 | 2026-07-26 |
| FAM·15 | Grandparent asymmetry | Family, Relationships & Human Development | 6 | 4 | 2026-07-26 |
| AST·10 | Gravity assist | Astronomy & Space | 6 | 3 | 2026-07-26 |
| ENV·16 | Grazing and grassland richness | Environment, Agriculture & Food | 6 | 4 | 2026-07-26 |
| ENV·17 | Grazing rest period | Environment, Agriculture & Food | 6 | 3 | 2026-07-26 |
| ENG·15 | Green wave signal timing | Engineering & Technology | 6 | 3 | 2026-07-26 |
| ENG·16 | Grid balancing | Engineering & Technology | 6 | 5 | 2026-07-26 |
| ENG·17 | Grid inertia loss | Engineering & Technology | 7 | 0 | 2026-07-26 |
| FAM·16 | Grief timing | Family, Relationships & Human Development | 7 | 2 | 2026-07-26 |
| CDA·104 | Grokking in training | Computing, Data & AI | 6 | 3 | 2026-07-26 |
| ART·19 | Groove and microtiming | Arts, Design & Culture | 6 | 5 | 2026-07-26 |
| TRV·13 | Ground delay programs | Travel, Tourism & Hospitality | 7 | 4 | 2026-07-26 |
| EDU·14 | Group projects | Education & Learning | 6 | 4 | 2026-07-26 |
| SPT·20 | Group-stage tiebreaks | Sports, Exercise & Recreation | 7 | 4 | 2026-07-26 |
| PHI·13 | Guaranteed secrecy | Philosophy, Ethics & Religion | 6 | 3 | 2026-07-26 |
| CDA·105 | Guardrails | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| TRV·14 | Guest-right | Travel, Tourism & Hospitality | 6 | 2 | 2026-07-26 |
| PHY·14 | Guided light | Physics | 6 | 5 | 2026-07-26 |
| ENG·18 | Guided light in fibre | Engineering & Technology | 7 | 4 | 2026-07-26 |
| BIO·12 | Gut colonization order | Biology & Ecology | 6 | 4 | 2026-07-26 |
| PHY·15 | Gyroscopic precession | Physics | 7 | 5 | 2026-07-26 |
| MIN·19 | Habit formation | Mind & Behavior | 6 | 4 | 2026-07-26 |
| MIN·20 | Habituation versus sensitization | Mind & Behavior | 6 | 5 | 2026-07-26 |
| MAT·20 | Hairy ball theorem | Mathematics & Statistics | 6 | 4 | 2026-07-26 |
| CDA·106 | Half-sorted is enough | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| CDA·107 | Halting problem | Computing, Data & AI | 6 | 3 | 2026-07-26 |
| CDA·108 | Halving the haystack | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| MED·19 | Hand hygiene compliance | Health & Medicine | 7 | 2 | 2026-07-26 |
| SPT·21 | Handicapping | Sports, Exercise & Recreation | 6 | 4 | 2026-07-26 |
| CDA·109 | Hash table clustering | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| LAN·14 | Headlinese | Language, Media & Communication | 6 | 4 | 2026-07-26 |
| SPT·22 | Heat acclimatization | Sports, Exercise & Recreation | 6 | 3 | 2026-07-26 |
| PHY·16 | Heat diffusion time | Physics | 6 | 3 | 2026-07-26 |
| ENG·19 | Heat exchanger fouling | Engineering & Technology | 6 | 2 | 2026-07-26 |
| ENG·20 | Heat pipes | Engineering & Technology | 6 | 3 | 2026-07-26 |
| MIN·21 | Hedonic adaptation | Mind & Behavior | 6 | 4 | 2026-07-26 |
| PHY·17 | Helium voice | Physics | 6 | 4 | 2026-07-26 |
| HIS·16 | Herd dispersal among kin | History, Society & Anthropology | 6 | 3 | 2026-07-26 |
| MED·20 | Herd immunity | Health & Medicine | 5 | 4 | 2026-07-26 |
| FAM·17 | Heritage language loss | Family, Relationships & Human Development | 6 | 4 | 2026-07-26 |
| BIO·13 | Hibernation | Biology & Ecology | 6 | 3 | 2026-07-26 |
| ENG·21 | High-voltage transmission | Engineering & Technology | 6 | 3 | 2026-07-26 |
| HIS·17 | Historical silence | History, Society & Anthropology | 5 | 4 | 2026-07-26 |
| MIL·22 | Holding a reserve | Military, Conflict & Strategic Studies | 6 | 4 | 2026-07-26 |
| MIL·23 | Holding conquered ground | Military, Conflict & Strategic Studies | 6 | 4 | 2026-07-26 |
| SPT·23 | Home advantage | Sports, Exercise & Recreation | 6 | 3 | 2026-07-26 |
| HOM·18 | Home insulation | Home, Consumer & Everyday Life | 6 | 4 | 2026-07-26 |
| TRV·15 | Honeypot sites | Travel, Tourism & Hospitality | 6 | 3 | 2026-07-26 |
| ECO·21 | Hostage capital | Economics & Business | 7 | 3 | 2026-07-26 |
| CDA·110 | Hot partitions | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| PHY·18 | Hourglass flow rate | Physics | 7 | 3 | 2026-07-26 |
| HOM·19 | House dust | Home, Consumer & Everyday Life | 6 | 4 | 2026-07-26 |
| FAM·18 | Household money pots | Family, Relationships & Human Development | 6 | 3 | 2026-07-26 |
| ART·20 | How can music create emotion? | Arts, Design & Culture | 6 | 6 | 2026-07-25 |
| BIO·14 | How do birds know where to migrate? | Biology & Ecology | 7 | 5 | 2026-07-25 |
| CDA·111 | How does a neural network learn? | Computing, Data & AI | 7 | 7 | 2026-07-25 |
| ENG·22 | How does a refrigerator cool food? | Engineering & Technology | 6 | 5 | 2026-07-25 |
| MED·21 | How does antibiotic resistance develop? | Health & Medicine | 7 | 6 | 2026-07-25 |
| ENG·23 | How does GPS find your location? | Engineering & Technology | 7 | 7 | 2026-07-25 |
| CDA·112 | How encryption keeps messages secret | Computing, Data & AI | 7 | 6 | 2026-07-25 |
| MED·22 | How vaccines work | Health & Medicine | 7 | 6 | 2026-07-25 |
| TRV·16 | Hub-and-spoke routing | Travel, Tourism & Hospitality | 6 | 3 | 2026-07-26 |
| EAR·13 | Hurricane intensification | Earth, Climate & Oceans | 6 | 5 | 2026-07-26 |
| CDA·113 | Hybrid search | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| ENV·18 | Hybrid seed decline | Environment, Agriculture & Food | 6 | 4 | 2026-07-26 |
| EAR·14 | Ice age triggers | Earth, Climate & Oceans | 6 | 4 | 2026-07-26 |
| EAR·15 | Ice core records | Earth, Climate & Oceans | 6 | 4 | 2026-07-26 |
| CDA·114 | Idempotent operations | Computing, Data & AI | 7 | 4 | 2026-07-26 |
| PHI·14 | Identity over change | Philosophy, Ethics & Religion | 6 | 4 | 2026-07-26 |
| CDA·115 | Immutability | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| PHI·15 | Imperceptible harms | Philosophy, Ethics & Religion | 6 | 4 | 2026-07-26 |
| MIN·22 | Inattentional blindness | Mind & Behavior | 6 | 4 | 2026-07-26 |
| MAT·21 | Incompleteness | Mathematics & Statistics | 6 | 4 | 2026-07-26 |
| ECO·22 | Incumbent disruption | Economics & Business | 7 | 5 | 2026-07-26 |
| CDA·116 | Indexing | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| LAN·15 | Indirect requests | Language, Media & Communication | 5 | 4 | 2026-07-26 |
| GEO·17 | Induced traffic | Geography & Regional Studies | 6 | 4 | 2026-07-26 |
| GEO·18 | Industrial district persistence | Geography & Regional Studies | 6 | 4 | 2026-07-26 |
| ECO·23 | Industry concentration | Economics & Business | 6 | 3 | 2026-07-26 |
| FAM·19 | Infant night waking | Family, Relationships & Human Development | 6 | 4 | 2026-07-26 |
| MAT·22 | Infinitude of primes | Mathematics & Statistics | 6 | 3 | 2026-07-26 |
| TRV·17 | Inflight taste | Travel, Tourism & Hospitality | 6 | 4 | 2026-07-26 |
| FAM·20 | Inherited parenting scripts | Family, Relationships & Human Development | 6 | 0 | 2026-07-26 |
| MAT·23 | Inspection paradox | Mathematics & Statistics | 6 | 5 | 2026-07-26 |
| CHM·23 | Instant glue | Chemistry & Materials | 6 | 4 | 2026-07-26 |
| HOM·20 | Insurance | Home, Consumer & Everyday Life | 6 | 4 | 2026-07-26 |
| ECO·24 | Insurance pooling | Economics & Business | 6 | 4 | 2026-07-26 |
| ENG·24 | Integrator windup | Engineering & Technology | 7 | 2 | 2026-07-26 |
| EDU·15 | Interleaved practice | Education & Learning | 5 | 4 | 2026-07-26 |
| PHY·19 | Intermediate axis instability | Physics | 6 | 3 | 2026-07-26 |
| ECO·25 | Internal transfer pricing | Economics & Business | 6 | 2 | 2026-07-26 |
| CDA·117 | Internet packet routing | Computing, Data & AI | 4 | 4 | 2026-07-25 |
| MIN·23 | Interoception | Mind & Behavior | 7 | 5 | 2026-07-26 |
| SPT·24 | Interval training | Sports, Exercise & Recreation | 6 | 0 | 2026-07-26 |
| ENG·25 | Involute gear teeth | Engineering & Technology | 7 | 3 | 2026-07-26 |
| LAN·16 | Irregular verb survival | Language, Media & Communication | 7 | 0 | 2026-07-26 |
| PHY·20 | Irreversibility | Physics | 6 | 5 | 2026-07-26 |
| ENV·19 | Irrigation efficiency paradox | Environment, Agriculture & Food | 6 | 4 | 2026-07-26 |
| ENV·20 | Irrigation scheduling depth | Environment, Agriculture & Food | 6 | 4 | 2026-07-26 |
| BIO·15 | Island size rule | Biology & Ecology | 6 | 5 | 2026-07-26 |
| CDA·118 | Isolates, containers, and startup cost | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| CDA·119 | Isolation levels | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| CDA·120 | Isolation without a machine | Computing, Data & AI | 7 | 5 | 2026-07-26 |
| EAR·16 | Isostatic rebound | Earth, Climate & Oceans | 6 | 4 | 2026-07-26 |
| BIO·16 | Janzen-Connell seedling mortality | Biology & Ecology | 6 | 4 | 2026-07-26 |
| ART·21 | Jazz improvisation | Arts, Design & Culture | 6 | 4 | 2026-07-26 |
| MED·23 | Jet lag | Health & Medicine | 5 | 3 | 2026-07-26 |
| SPT·25 | Judging order effects | Sports, Exercise & Recreation | 6 | 3 | 2026-07-26 |
| GOV·17 | Judicial recusal | Government, Law & Civics | 6 | 3 | 2026-07-26 |
| GOV·18 | Judicial review | Government, Law & Civics | 6 | 3 | 2026-07-26 |
| SPT·26 | Junior champions | Sports, Exercise & Recreation | 6 | 4 | 2026-07-26 |
| GOV·19 | Jury deliberation | Government, Law & Civics | 5 | 3 | 2026-07-26 |
| ECO·26 | Just-in-time fragility | Economics & Business | 7 | 4 | 2026-07-26 |
| MIN·24 | Just-noticeable difference | Mind & Behavior | 6 | 4 | 2026-07-26 |
| EAR·17 | Katabatic winds | Earth, Climate & Oceans | 6 | 3 | 2026-07-26 |
| PHI·16 | Keeping a rule against the case | Philosophy, Ethics & Religion | 7 | 4 | 2026-07-26 |
| CDA·121 | Keeping the history and the snapshot in one file | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| BIO·17 | Keystone species | Biology & Ecology | 6 | 4 | 2026-07-26 |
| CDA·122 | Killed with memory to spare | Computing, Data & AI | 7 | 5 | 2026-07-26 |
| AST·11 | Kirkwood gaps | Astronomy & Space | 6 | 4 | 2026-07-26 |
| SPT·27 | Knockout upsets | Sports, Exercise & Recreation | 6 | 4 | 2026-07-26 |
| EDU·16 | Knowledge and comprehension | Education & Learning | 6 | 3 | 2026-07-26 |
| PHI·17 | Knowledge from testimony | Philosophy, Ethics & Religion | 6 | 5 | 2026-07-26 |
| CDA·123 | Labelling before deciding | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| AST·12 | Lagrange points | Astronomy & Space | 6 | 4 | 2026-07-26 |
| EAR·18 | Lake turnover | Earth, Climate & Oceans | 6 | 4 | 2026-07-26 |
| BIO·18 | Land size limits | Biology & Ecology | 6 | 4 | 2026-07-26 |
| ENV·21 | Landfill methane | Environment, Agriculture & Food | 6 | 4 | 2026-07-26 |
| GEO·19 | Landlocked disadvantage | Geography & Regional Studies | 6 | 3 | 2026-07-26 |
| TRV·18 | Landmark restaurants | Travel, Tourism & Hospitality | 6 | 4 | 2026-07-26 |
| AST·13 | Large mirror flexure | Astronomy & Space | 6 | 3 | 2026-07-26 |
| PHY·21 | Laser coherence | Physics | 6 | 5 | 2026-07-26 |
| PHY·22 | Laser cooling | Physics | 6 | 3 | 2026-07-26 |
| HIS·18 | Late marriage and population restraint | History, Society & Anthropology | 7 | 2 | 2026-07-26 |
| CDA·124 | Late-arriving data | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| BIO·19 | Lateral inhibition in tissue | Biology & Ecology | 6 | 3 | 2026-07-26 |
| CDA·125 | Layers are diffs | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| WRK·15 | Lead in short lengths | Work, Careers & Skilled Trades | 6 | 0 | 2026-07-26 |
| ENG·26 | Leak-before-break | Engineering & Technology | 6 | 3 | 2026-07-26 |
| MIN·25 | Learned helplessness | Mind & Behavior | 6 | 3 | 2026-07-26 |
| WRK·16 | Learning a trade by standing there | Work, Careers & Skilled Trades | 6 | 3 | 2026-07-26 |
| EDU·17 | Learning by explaining | Education & Learning | 6 | 4 | 2026-07-26 |
| EDU·18 | Learning plateaus | Education & Learning | 6 | 4 | 2026-07-26 |
| CDA·126 | Least astonishment | Computing, Data & AI | 7 | 4 | 2026-07-26 |
| HOM·21 | LED dimmer incompatibility | Home, Consumer & Everyday Life | 6 | 4 | 2026-07-26 |
| SPT·28 | Left-hander advantage | Sports, Exercise & Recreation | 6 | 2 | 2026-07-26 |
| HOM·22 | Leftover spoilage | Home, Consumer & Everyday Life | 5 | 4 | 2026-07-26 |
| GOV·20 | Legal precedent | Government, Law & Civics | 6 | 4 | 2026-07-26 |
| BIO·20 | Leghemoglobin in root nodules | Biology & Ecology | 6 | 4 | 2026-07-26 |
| ART·22 | Legibility | Arts, Design & Culture | 6 | 4 | 2026-07-26 |
| TRV·19 | Length-of-stay controls | Travel, Tourism & Hospitality | 6 | 2 | 2026-07-26 |
| CDA·127 | Letting callers ask for exactly what they want | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| WRK·17 | Light-load diesel running | Work, Careers & Skilled Trades | 6 | 2 | 2026-07-26 |
| ENV·22 | Lime-induced nutrient lockup | Environment, Agriculture & Food | 6 | 3 | 2026-07-26 |
| HOM·23 | Limescale | Home, Consumer & Everyday Life | 6 | 4 | 2026-07-26 |
| HIS·19 | Liminality in initiation | History, Society & Anthropology | 6 | 3 | 2026-07-26 |
| WRK·18 | Limiting work in progress | Work, Careers & Skilled Trades | 6 | 2 | 2026-07-26 |
| BIO·21 | Limits of regeneration | Biology & Ecology | 6 | 5 | 2026-07-26 |
| CDA·128 | Lineage | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| ART·23 | Linear perspective | Arts, Design & Culture | 5 | 3 | 2026-07-26 |
| CHM·24 | Liquid crystals | Chemistry & Materials | 6 | 4 | 2026-07-26 |
| PHI·18 | Living interpretation of a fixed text | Philosophy, Ethics & Religion | 6 | 5 | 2026-07-26 |
| LAN·17 | Loanword doublets | Language, Media & Communication | 6 | 3 | 2026-07-26 |
| MED·24 | Local anaesthetic failure | Health & Medicine | 6 | 4 | 2026-07-26 |
| CDA·129 | Logged into someone else's account | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| MAT·24 | Long-run chain behaviour | Mathematics & Statistics | 6 | 5 | 2026-07-26 |
| GOV·21 | Loser-pays cost rules | Government, Law & Civics | 6 | 2 | 2026-07-26 |
| CDA·130 | Losing it or doing it twice | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| CDA·131 | Lossless compression | Computing, Data & AI | 6 | 6 | 2026-07-26 |
| CDA·132 | Lost in the middle | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| AST·14 | Low-frequency radio cutoff | Astronomy & Space | 6 | 3 | 2026-07-26 |
| SPT·29 | Magnus effect | Sports, Exercise & Recreation | 7 | 5 | 2026-07-26 |
| ENV·23 | Maillard browning | Environment, Agriculture & Food | 5 | 4 | 2026-07-26 |
| ENV·24 | Managed hives and wild pollinators | Environment, Agriculture & Food | 6 | 2 | 2026-07-26 |
| PHI·19 | Mandated rest days | Philosophy, Ethics & Religion | 7 | 3 | 2026-07-26 |
| CDA·133 | Many agents, one task | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| GEO·20 | Map projection distortion | Geography & Regional Studies | 5 | 4 | 2026-07-26 |
| ART·24 | Marble supports | Arts, Design & Culture | 6 | 4 | 2026-07-26 |
| EAR·19 | Marine reservoir age | Earth, Climate & Oceans | 6 | 1 | 2026-07-26 |
| MIL·24 | Maritime chokepoints | Military, Conflict & Strategic Studies | 6 | 3 | 2026-07-26 |
| EDU·19 | Marker disagreement | Education & Learning | 6 | 4 | 2026-07-26 |
| GEO·21 | Market day rotation | Geography & Regional Studies | 6 | 4 | 2026-07-26 |
| HIS·20 | Marrying outside the group | History, Society & Anthropology | 6 | 4 | 2026-07-26 |
| AST·15 | Martian atmosphere loss | Astronomy & Space | 6 | 3 | 2026-07-26 |
| GEO·22 | Mass elevation effect | Geography & Regional Studies | 6 | 4 | 2026-07-26 |
| ART·25 | Massed string sound | Arts, Design & Culture | 6 | 3 | 2026-07-26 |
| BIO·22 | Mast seeding | Biology & Ecology | 6 | 5 | 2026-07-26 |
| WRK·19 | Master keying | Work, Careers & Skilled Trades | 6 | 4 | 2026-07-26 |
| PHY·23 | Maxwell's demon | Physics | 6 | 3 | 2026-07-26 |
| ENG·27 | Measurement dead time | Engineering & Technology | 6 | 2 | 2026-07-26 |
| HIS·21 | Measurement standardization | History, Society & Anthropology | 5 | 2 | 2026-07-26 |
| ENG·28 | Mechanical advantage | Engineering & Technology | 6 | 5 | 2026-07-26 |
| LAN·18 | Media sameness | Language, Media & Communication | 6 | 3 | 2026-07-26 |
| CDA·134 | Memory fragmentation | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| MIN·26 | Memory reconstruction | Mind & Behavior | 5 | 4 | 2026-07-26 |
| CDA·135 | Memory thrashing | Computing, Data & AI | 6 | 3 | 2026-07-26 |
| ECO·27 | Mental accounting | Economics & Business | 5 | 3 | 2026-07-26 |
| CDA·136 | Merge conflicts | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| FAM·21 | Merged kinship terms | Family, Relationships & Human Development | 7 | 5 | 2026-07-26 |
| CDA·137 | Merging often | Computing, Data & AI | 6 | 2 | 2026-07-26 |
| BIO·23 | Metabolic scaling | Biology & Ecology | 6 | 4 | 2026-07-26 |
| LAN·19 | Metaphor | Language, Media & Communication | 6 | 4 | 2026-07-26 |
| MED·25 | Metastasis | Health & Medicine | 6 | 4 | 2026-07-26 |
| AST·16 | Meteor streaks | Astronomy & Space | 6 | 4 | 2026-07-26 |
| CDA·138 | Metered cost | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| CDA·139 | Metric cardinality explosion | Computing, Data & AI | 7 | 3 | 2026-07-26 |
| ART·26 | Metrical verse | Arts, Design & Culture | 6 | 3 | 2026-07-26 |
| ART·27 | Microphone proximity effect | Arts, Design & Culture | 7 | 3 | 2026-07-26 |
| BIO·24 | Midday stomatal closure | Biology & Ecology | 6 | 5 | 2026-07-26 |
| MIL·25 | Military logistics | Military, Conflict & Strategic Studies | 6 | 4 | 2026-07-26 |
| ENV·25 | Milk spoilage after opening | Environment, Agriculture & Food | 6 | 4 | 2026-07-26 |
| MIL·26 | Mine warfare | Military, Conflict & Strategic Studies | 6 | 4 | 2026-07-26 |
| MIN·27 | Minority influence | Mind & Behavior | 6 | 4 | 2026-07-26 |
| WRK·20 | Misleading fault codes | Work, Careers & Skilled Trades | 6 | 2 | 2026-07-26 |
| TRV·20 | Missed connections | Travel, Tourism & Hospitality | 6 | 3 | 2026-07-26 |
| MIL·27 | Mission command | Military, Conflict & Strategic Studies | 6 | 3 | 2026-07-26 |
| TRV·21 | Mixed-speed rail capacity | Travel, Tourism & Hospitality | 6 | 2 | 2026-07-26 |
| CDA·140 | Model collapse | Computing, Data & AI | 6 | 3 | 2026-07-26 |
| CDA·141 | Model drift | Computing, Data & AI | 7 | 5 | 2026-07-26 |
| CDA·142 | Model quantization | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| CDA·143 | Model routing | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| GEO·23 | Modifiable areal units | Geography & Regional Studies | 6 | 3 | 2026-07-26 |
| CHM·25 | Molecular handedness | Chemistry & Materials | 6 | 4 | 2026-07-26 |
| ENV·26 | Monoculture fragility | Environment, Agriculture & Food | 6 | 4 | 2026-07-26 |
| EAR·20 | Monsoon | Earth, Climate & Oceans | 6 | 4 | 2026-07-26 |
| MAT·25 | Monty Hall problem | Mathematics & Statistics | 6 | 2 | 2026-07-26 |
| AST·17 | Moon illusion | Astronomy & Space | 7 | 3 | 2026-07-26 |
| PHI·20 | Moral luck | Philosophy, Ethics & Religion | 5 | 3 | 2026-07-26 |
| BIO·25 | Morphogen gradients | Biology & Ecology | 7 | 3 | 2026-07-26 |
| MIN·28 | Motion sickness | Mind & Behavior | 6 | 4 | 2026-07-26 |
| GEO·24 | Mountain language diversity | Geography & Regional Studies | 6 | 3 | 2026-07-26 |
| WRK·21 | Movement joints in tiling | Work, Careers & Skilled Trades | 6 | 2 | 2026-07-26 |
| CDA·144 | Moving failure handling out of the program | Computing, Data & AI | 6 | 6 | 2026-07-26 |
| CDA·145 | Multimodal fusion | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| MIL·28 | Munitions stockpiles | Military, Conflict & Strategic Studies | 7 | 3 | 2026-07-26 |
| SPT·30 | Muscle cramp | Sports, Exercise & Recreation | 7 | 4 | 2026-07-26 |
| ART·28 | Museum lighting | Arts, Design & Culture | 7 | 3 | 2026-07-26 |
| ART·29 | Musical consonance | Arts, Design & Culture | 5 | 3 | 2026-07-26 |
| BIO·26 | Mycorrhizal carbon trade | Biology & Ecology | 6 | 3 | 2026-07-26 |
| MIN·29 | Nap length | Mind & Behavior | 6 | 3 | 2026-07-26 |
| WRK·22 | Natural bed in stone | Work, Careers & Skilled Trades | 7 | 3 | 2026-07-26 |
| WRK·23 | Near misses | Work, Careers & Skilled Trades | 6 | 4 | 2026-07-26 |
| CDA·146 | Nearest first | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| MAT·26 | Negative edge weights | Mathematics & Statistics | 7 | 2 | 2026-07-26 |
| ECO·28 | Network effects | Economics & Business | 6 | 5 | 2026-07-26 |
| PHY·24 | Neutrino detection | Physics | 6 | 2 | 2026-07-26 |
| HIS·22 | New crops and population growth | History, Society & Anthropology | 7 | 4 | 2026-07-26 |
| CDA·147 | Next-token prediction | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| PHY·25 | Night window reflections | Physics | 6 | 4 | 2026-07-26 |
| HOM·24 | Night-time alarm chirp | Home, Consumer & Everyday Life | 6 | 4 | 2026-07-26 |
| LAN·20 | Nighttime radio reach | Language, Media & Communication | 7 | 0 | 2026-07-26 |
| PHI·21 | Non-identity problem | Philosophy, Ethics & Religion | 6 | 3 | 2026-07-26 |
| CDA·148 | Normalization | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| EDU·20 | Note-taking by hand | Education & Learning | 6 | 4 | 2026-07-26 |
| GOV·22 | Notice-and-comment rulemaking | Government, Law & Civics | 6 | 3 | 2026-07-26 |
| PHY·26 | Nuclear binding energy | Physics | 6 | 5 | 2026-07-26 |
| MED·26 | Number needed to treat | Health & Medicine | 6 | 3 | 2026-07-26 |
| CDA·149 | Objects that do not know they are stored | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| MIL·29 | Obsolete fortifications | Military, Conflict & Strategic Studies | 7 | 4 | 2026-07-26 |
| WRK·24 | Occupational licensing | Work, Careers & Skilled Trades | 6 | 3 | 2026-07-26 |
| EAR·21 | Ocean acidification | Earth, Climate & Oceans | 6 | 4 | 2026-07-26 |
| EAR·22 | Ocean circulation | Earth, Climate & Oceans | 5 | 4 | 2026-07-26 |
| BIO·27 | Ocean productivity | Biology & Ecology | 6 | 5 | 2026-07-26 |
| ENG·29 | Oil film in bearings | Engineering & Technology | 6 | 5 | 2026-07-26 |
| CDA·150 | One improbable word | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| CDA·151 | Opaque cursors | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| GOV·23 | Open government records | Government, Law & Civics | 7 | 0 | 2026-07-26 |
| MED·27 | Opioid-induced hyperalgesia | Health & Medicine | 7 | 0 | 2026-07-26 |
| ART·30 | Optical sizes in type | Arts, Design & Culture | 6 | 3 | 2026-07-26 |
| MAT·27 | Optimal stopping | Mathematics & Statistics | 6 | 3 | 2026-07-26 |
| HIS·23 | Oral tradition | History, Society & Anthropology | 6 | 4 | 2026-07-26 |
| AST·18 | Orbital debris cascade | Astronomy & Space | 7 | 3 | 2026-07-26 |
| AST·19 | Orbital drag speed-up | Astronomy & Space | 6 | 4 | 2026-07-26 |
| AST·20 | Orbital rendezvous | Astronomy & Space | 6 | 4 | 2026-07-26 |
| CDA·152 | Orchestration | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| CDA·153 | Order from pairwise rules | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| CDA·154 | Order within a slice | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| MED·28 | Organ allocation matching | Health & Medicine | 6 | 4 | 2026-07-26 |
| HIS·24 | Origin of money | History, Society & Anthropology | 6 | 5 | 2026-07-26 |
| HIS·25 | Origin of the state | History, Society & Anthropology | 5 | 3 | 2026-07-26 |
| BIO·28 | Original antigenic sin | Biology & Ecology | 7 | 3 | 2026-07-26 |
| CDA·155 | Output as untrusted input | Computing, Data & AI | 7 | 5 | 2026-07-26 |
| TRV·22 | Overbooking | Travel, Tourism & Hospitality | 6 | 4 | 2026-07-26 |
| MED·29 | Overdiagnosis | Health & Medicine | 6 | 4 | 2026-07-26 |
| CDA·156 | Overfitting | Computing, Data & AI | 6 | 6 | 2026-07-26 |
| FAM·22 | Overheard speech and vocabulary | Family, Relationships & Human Development | 7 | 2 | 2026-07-26 |
| ECO·29 | Overnight repo lending | Economics & Business | 7 | 3 | 2026-07-26 |
| TRV·23 | Overtourism | Travel, Tourism & Hospitality | 6 | 4 | 2026-07-26 |
| SPT·31 | Overtraining | Sports, Exercise & Recreation | 6 | 4 | 2026-07-26 |
| TRV·24 | Package tour pricing | Travel, Tourism & Hospitality | 6 | 3 | 2026-07-26 |
| HOM·25 | Pantry moth persistence | Home, Consumer & Everyday Life | 7 | 4 | 2026-07-26 |
| CHM·26 | Paper chromatography | Chemistry & Materials | 6 | 3 | 2026-07-26 |
| MAT·28 | Paper folding limit | Mathematics & Statistics | 6 | 3 | 2026-07-26 |
| PHI·22 | Paradox of tolerance | Philosophy, Ethics & Religion | 6 | 2 | 2026-07-26 |
| ECO·30 | Paradox of value | Economics & Business | 6 | 3 | 2026-07-26 |
| BIO·29 | Parasite host manipulation | Biology & Ecology | 6 | 4 | 2026-07-26 |
| MIN·30 | Pareidolia | Mind & Behavior | 6 | 4 | 2026-07-26 |
| CDA·157 | Partition pruning | Computing, Data & AI | 6 | 3 | 2026-07-26 |
| CHM·27 | Passivation | Chemistry & Materials | 6 | 4 | 2026-07-26 |
| ENV·27 | Pasteurised mushroom substrate | Environment, Agriculture & Food | 7 | 5 | 2026-07-26 |
| ART·31 | Patina and age value | Arts, Design & Culture | 6 | 4 | 2026-07-26 |
| EAR·23 | Patterned ground | Earth, Climate & Oceans | 6 | 4 | 2026-07-26 |
| WRK·25 | Pay rises by leaving | Work, Careers & Skilled Trades | 6 | 0 | 2026-07-26 |
| WRK·26 | Paying above the market | Work, Careers & Skilled Trades | 6 | 4 | 2026-07-26 |
| WRK·27 | Paying for the five-minute fix | Work, Careers & Skilled Trades | 6 | 3 | 2026-07-26 |
| EDU·21 | Paying pupils to read | Education & Learning | 6 | 3 | 2026-07-26 |
| MIL·30 | Peace negotiation | Military, Conflict & Strategic Studies | 5 | 3 | 2026-07-26 |
| MIL·31 | Peacekeeping mandates | Military, Conflict & Strategic Studies | 7 | 4 | 2026-07-26 |
| SPT·32 | Penalty aiming | Sports, Exercise & Recreation | 6 | 4 | 2026-07-26 |
| CDA·158 | Permission-aware retrieval | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| LAN·21 | Persistence of misinformation | Language, Media & Communication | 6 | 4 | 2026-07-26 |
| GEO·25 | Persistent poor neighbourhoods | Geography & Regional Studies | 6 | 4 | 2026-07-26 |
| GOV·24 | Persistent rules | Government, Law & Civics | 6 | 4 | 2026-07-26 |
| ENV·28 | Pest resurgence | Environment, Agriculture & Food | 6 | 4 | 2026-07-26 |
| MED·30 | Phantom limb pain | Health & Medicine | 4 | 3 | 2026-07-25 |
| GEO·26 | Phantom traffic jams | Geography & Regional Studies | 6 | 4 | 2026-07-26 |
| ART·32 | Photographic evidence | Arts, Design & Culture | 6 | 4 | 2026-07-26 |
| AST·21 | Photon escape time | Astronomy & Space | 6 | 4 | 2026-07-26 |
| BIO·30 | Photosynthesis | Biology & Ecology | 6 | 5 | 2026-07-26 |
| CHM·28 | Physical ageing of plastics | Chemistry & Materials | 6 | 4 | 2026-07-26 |
| MED·31 | Physiological reserve | Health & Medicine | 6 | 0 | 2026-07-26 |
| MAT·29 | Pigeonhole principle | Mathematics & Statistics | 6 | 3 | 2026-07-26 |
| EDU·22 | Pilot-to-scale failure | Education & Learning | 6 | 3 | 2026-07-26 |
| GEO·27 | Pingo growth | Geography & Regional Studies | 7 | 4 | 2026-07-26 |
| MED·32 | Pins and needles | Health & Medicine | 6 | 5 | 2026-07-26 |
| BIO·31 | Pit viper infrared sensing | Biology & Ecology | 6 | 3 | 2026-07-26 |
| GEO·28 | Place names | Geography & Regional Studies | 6 | 5 | 2026-07-26 |
| MED·33 | Placebo effect | Health & Medicine | 5 | 4 | 2026-07-26 |
| AST·22 | Planetary rings | Astronomy & Space | 5 | 4 | 2026-07-26 |
| WRK·28 | Planning fallacy | Work, Careers & Skilled Trades | 6 | 4 | 2026-07-26 |
| CDA·159 | Planting the source it will cite | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| WRK·29 | Plaster in thin coats | Work, Careers & Skilled Trades | 7 | 0 | 2026-07-26 |
| CHM·29 | Plastic weathering | Chemistry & Materials | 6 | 3 | 2026-07-26 |
| GOV·25 | Plea bargaining | Government, Law & Civics | 6 | 4 | 2026-07-26 |
| AST·23 | Pluto's seasonal atmosphere | Astronomy & Space | 6 | 5 | 2026-07-26 |
| CDA·160 | Point-in-time joins | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| CDA·161 | Poison messages | Computing, Data & AI | 7 | 4 | 2026-07-26 |
| CDA·162 | Poisoning the well | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| EAR·24 | Polar amplification | Earth, Climate & Oceans | 6 | 4 | 2026-07-26 |
| BIO·32 | Pollination specificity | Biology & Ecology | 5 | 4 | 2026-07-26 |
| HIS·26 | Post-plague wages | History, Society & Anthropology | 6 | 4 | 2026-07-26 |
| FAM·23 | Post-reproductive life | Family, Relationships & Human Development | 6 | 3 | 2026-07-26 |
| MIN·31 | Practice feedback | Mind & Behavior | 7 | 5 | 2026-07-26 |
| CDA·163 | Prefill and decode | Computing, Data & AI | 6 | 6 | 2026-07-26 |
| MED·34 | Pregnancy immune tolerance | Health & Medicine | 6 | 4 | 2026-07-26 |
| EDU·23 | Prerequisite chains | Education & Learning | 7 | 3 | 2026-07-26 |
| HIS·27 | Preservation bias | History, Society & Anthropology | 6 | 2 | 2026-07-26 |
| GOV·26 | Presumption of innocence | Government, Law & Civics | 6 | 5 | 2026-07-26 |
| WRK·30 | Preventive replacement | Work, Careers & Skilled Trades | 6 | 3 | 2026-07-26 |
| ECO·31 | Price signals | Economics & Business | 6 | 4 | 2026-07-26 |
| PHI·23 | Pricing the sacred | Philosophy, Ethics & Religion | 6 | 4 | 2026-07-26 |
| GEO·29 | Primate cities | Geography & Regional Studies | 6 | 3 | 2026-07-26 |
| PHI·24 | Problem of evil | Philosophy, Ethics & Religion | 7 | 1 | 2026-07-26 |
| PHI·25 | Problem of induction | Philosophy, Ethics & Religion | 6 | 4 | 2026-07-26 |
| ECO·32 | Profit versus cash | Economics & Business | 6 | 4 | 2026-07-26 |
| BIO·33 | Programmed cell death | Biology & Ecology | 6 | 4 | 2026-07-26 |
| CDA·164 | Progress-bar estimates | Computing, Data & AI | 6 | 3 | 2026-07-26 |
| PHI·26 | Prohibition of images | Philosophy, Ethics & Religion | 6 | 5 | 2026-07-26 |
| PHI·27 | Promising | Philosophy, Ethics & Religion | 6 | 3 | 2026-07-26 |
| WRK·31 | Promotion mismatch | Work, Careers & Skilled Trades | 6 | 4 | 2026-07-26 |
| CDA·165 | Prompt chaining | Computing, Data & AI | 7 | 4 | 2026-07-26 |
| CDA·166 | Prompt injection | Computing, Data & AI | 7 | 5 | 2026-07-26 |
| CDA·167 | Prompt sensitivity | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| MIN·32 | Prospective memory | Mind & Behavior | 6 | 5 | 2026-07-26 |
| CDA·168 | Protocol errors versus execution errors | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| CDA·169 | Provenance of what you deploy | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| CDA·170 | Proving you started the exchange you are finishing | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| FAM·24 | Proxy arguments | Family, Relationships & Human Development | 6 | 4 | 2026-07-26 |
| CDA·171 | Pseudorandomness | Computing, Data & AI | 7 | 5 | 2026-07-26 |
| AST·24 | Pulsar spin rates | Astronomy & Space | 7 | 4 | 2026-07-26 |
| CDA·172 | Query plan estimation | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| BIO·34 | Quorum sensing | Biology & Ecology | 6 | 4 | 2026-07-26 |
| CDA·173 | Quorums | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| WRK·32 | Quoting a job | Work, Careers & Skilled Trades | 6 | 4 | 2026-07-26 |
| ENV·29 | Race to fish under quota | Environment, Agriculture & Food | 7 | 5 | 2026-07-26 |
| HOM·26 | Radiant chill indoors | Home, Consumer & Everyday Life | 6 | 2 | 2026-07-26 |
| EAR·25 | Radiation frost | Earth, Climate & Oceans | 6 | 5 | 2026-07-26 |
| AST·25 | Radiation-hardened spacecraft computers | Astronomy & Space | 7 | 5 | 2026-07-26 |
| ENG·30 | Radio diffraction | Engineering & Technology | 6 | 5 | 2026-07-26 |
| AST·26 | Radio interferometry | Astronomy & Space | 6 | 4 | 2026-07-26 |
| PHY·27 | Radioactive half-life | Physics | 6 | 4 | 2026-07-26 |
| HIS·28 | Radiocarbon calibration plateaus | History, Society & Anthropology | 6 | 4 | 2026-07-26 |
| EAR·26 | Rain shadow | Earth, Climate & Oceans | 6 | 5 | 2026-07-26 |
| EAR·27 | Rainfall isotope distillation | Earth, Climate & Oceans | 7 | 4 | 2026-07-26 |
| GOV·27 | Random audits | Government, Law & Civics | 7 | 2 | 2026-07-26 |
| MAT·30 | Random walk recurrence | Mathematics & Statistics | 6 | 4 | 2026-07-26 |
| TRV·25 | Randomized screening | Travel, Tourism & Hospitality | 6 | 4 | 2026-07-26 |
| MED·35 | Randomized trials | Health & Medicine | 6 | 4 | 2026-07-26 |
| CDA·174 | Rapidly changing attributes | Computing, Data & AI | 6 | 3 | 2026-07-26 |
| LAN·22 | Rare words in corpora | Language, Media & Communication | 6 | 0 | 2026-07-26 |
| CDA·175 | Rate limiting | Computing, Data & AI | 7 | 3 | 2026-07-26 |
| CDA·176 | Re-identification of anonymized data | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| EDU·24 | Reading acquisition | Education & Learning | 6 | 6 | 2026-07-26 |
| ART·33 | Reciprocity failure | Arts, Design & Culture | 6 | 4 | 2026-07-26 |
| CDA·177 | Recommendation narrowing | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| CDA·178 | Recording a change without losing the present | Computing, Data & AI | 7 | 4 | 2026-07-26 |
| CDA·179 | Recovering a schedule nobody wrote down | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| CDA·180 | Recovering what the business meant | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| CDA·181 | Recovery objectives | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| BIO·35 | Redox banding in sediment | Biology & Ecology | 6 | 3 | 2026-07-26 |
| AST·27 | Reentry heating | Astronomy & Space | 7 | 4 | 2026-07-26 |
| MED·36 | Referred pain | Health & Medicine | 6 | 5 | 2026-07-26 |
| CDA·182 | Refinement stages | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| MAT·31 | Regression to the mean | Mathematics & Statistics | 6 | 4 | 2026-07-26 |
| GOV·28 | Regulatory capture | Government, Law & Civics | 6 | 4 | 2026-07-26 |
| GOV·29 | Regulatory grandfathering | Government, Law & Civics | 6 | 0 | 2026-07-26 |
| GOV·30 | Regulatory ossification | Government, Law & Civics | 6 | 2 | 2026-07-26 |
| ENG·31 | Reinforced concrete | Engineering & Technology | 5 | 4 | 2026-07-26 |
| SPT·33 | Relative age effect | Sports, Exercise & Recreation | 6 | 3 | 2026-07-26 |
| CDA·183 | Releasing to a few first | Computing, Data & AI | 7 | 3 | 2026-07-26 |
| TRV·26 | Remembered holidays | Travel, Tourism & Hospitality | 6 | 4 | 2026-07-26 |
| CDA·184 | Remembering the sub-answers | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| FAM·25 | Reminiscence bump | Family, Relationships & Human Development | 6 | 4 | 2026-07-26 |
| FAM·26 | Remittances and the children left behind | Family, Relationships & Human Development | 6 | 4 | 2026-07-26 |
| HOM·27 | Repair economics | Home, Consumer & Everyday Life | 6 | 4 | 2026-07-26 |
| CDA·185 | Replacing a system you cannot turn off | Computing, Data & AI | 7 | 6 | 2026-07-26 |
| CDA·186 | Replay determinism | Computing, Data & AI | 7 | 4 | 2026-07-26 |
| CDA·187 | Replication lag | Computing, Data & AI | 7 | 6 | 2026-07-26 |
| CDA·188 | Requests you did not make | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| PHY·28 | Resonance | Physics | 5 | 3 | 2026-07-26 |
| GOV·31 | Resource revenue and accountability | Government, Law & Civics | 6 | 4 | 2026-07-26 |
| ECO·33 | Retail clustering | Economics & Business | 6 | 4 | 2026-07-26 |
| EDU·25 | Retrieval practice | Education & Learning | 5 | 4 | 2026-07-26 |
| CDA·189 | Retrieval-augmented generation | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| CDA·190 | Retry storms | Computing, Data & AI | 6 | 3 | 2026-07-26 |
| TRV·27 | Return-trip effect | Travel, Tourism & Hospitality | 6 | 3 | 2026-07-26 |
| HOM·28 | Review polarization | Home, Consumer & Everyday Life | 6 | 0 | 2026-07-26 |
| HIS·29 | Revolution timing | History, Society & Anthropology | 6 | 4 | 2026-07-26 |
| HOM·29 | Rice cooker cutoff | Home, Consumer & Everyday Life | 6 | 0 | 2026-07-26 |
| ENV·30 | Ripening by contagion | Environment, Agriculture & Food | 5 | 5 | 2026-07-26 |
| PHI·28 | Ritual legal fictions | Philosophy, Ethics & Religion | 7 | 4 | 2026-07-26 |
| PHI·29 | Ritual meaning | Philosophy, Ethics & Religion | 5 | 3 | 2026-07-26 |
| GEO·30 | River boundaries that shift | Geography & Regional Studies | 7 | 4 | 2026-07-26 |
| GEO·31 | River capture | Geography & Regional Studies | 6 | 5 | 2026-07-26 |
| EAR·28 | River meanders | Earth, Climate & Oceans | 4 | 4 | 2026-07-25 |
| GEO·32 | River name survival | Geography & Regional Studies | 7 | 0 | 2026-07-26 |
| ENG·32 | Road cracking | Engineering & Technology | 6 | 5 | 2026-07-26 |
| AST·28 | Rocket staging | Astronomy & Space | 6 | 4 | 2026-07-26 |
| EAR·29 | Rogue waves | Earth, Climate & Oceans | 6 | 4 | 2026-07-26 |
| CDA·191 | Roles as compression | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| HOM·30 | Rolling boil versus simmer | Home, Consumer & Everyday Life | 6 | 4 | 2026-07-26 |
| TRV·28 | Room turnover window | Travel, Tourism & Hospitality | 6 | 0 | 2026-07-26 |
| WRK·33 | Rough-in inspection | Work, Careers & Skilled Trades | 6 | 3 | 2026-07-26 |
| MIL·32 | Rout | Military, Conflict & Strategic Studies | 6 | 0 | 2026-07-26 |
| SPT·34 | Rowing crew scale | Sports, Exercise & Recreation | 6 | 4 | 2026-07-26 |
| CHM·30 | Rubber elasticity | Chemistry & Materials | 6 | 5 | 2026-07-26 |
| CDA·192 | Rubber-stamped review | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| WRK·34 | Rules of thumb on site | Work, Careers & Skilled Trades | 6 | 3 | 2026-07-26 |
| LAN·23 | Rumour sharpening | Language, Media & Communication | 6 | 4 | 2026-07-26 |
| CDA·193 | Running both and comparing | Computing, Data & AI | 6 | 6 | 2026-07-26 |
| ENV·31 | Runoff from dry ground | Environment, Agriculture & Food | 6 | 4 | 2026-07-26 |
| GEO·33 | Rural depopulation | Geography & Regional Studies | 6 | 4 | 2026-07-26 |
| CHM·31 | Sacrificial anodes | Chemistry & Materials | 6 | 4 | 2026-07-26 |
| ECO·34 | Safety stock | Economics & Business | 6 | 5 | 2026-07-26 |
| CDA·194 | Sagas | Computing, Data & AI | 6 | 1 | 2026-07-26 |
| SPT·35 | Sailing upwind | Sports, Exercise & Recreation | 6 | 3 | 2026-07-26 |
| ENV·32 | Salinization | Environment, Agriculture & Food | 6 | 4 | 2026-07-26 |
| MAT·32 | Sample size versus population | Mathematics & Statistics | 6 | 5 | 2026-07-26 |
| WRK·35 | Scaffold ties | Work, Careers & Skilled Trades | 6 | 0 | 2026-07-26 |
| CDA·195 | Scaling that overshoots | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| HIS·30 | Scattered strip farming | History, Society & Anthropology | 6 | 3 | 2026-07-26 |
| TRV·29 | Schedule padding | Travel, Tourism & Hospitality | 6 | 4 | 2026-07-26 |
| PHI·30 | Scientific testability | Philosophy, Ethics & Religion | 5 | 4 | 2026-07-26 |
| MED·37 | Screening false positives | Health & Medicine | 6 | 5 | 2026-07-26 |
| HOM·31 | Screws in end grain | Home, Consumer & Everyday Life | 6 | 4 | 2026-07-26 |
| HIS·31 | Scribal abbreviation | History, Society & Anthropology | 6 | 4 | 2026-07-26 |
| EAR·30 | Sea breeze reversal | Earth, Climate & Oceans | 6 | 4 | 2026-07-26 |
| EAR·31 | Sea level fingerprints | Earth, Climate & Oceans | 6 | 4 | 2026-07-26 |
| EAR·32 | Sea saltiness | Earth, Climate & Oceans | 6 | 5 | 2026-07-26 |
| EAR·33 | Sea-ice brine rejection | Earth, Climate & Oceans | 6 | 4 | 2026-07-26 |
| CDA·196 | Search indexing | Computing, Data & AI | 6 | 7 | 2026-07-26 |
| AST·29 | Seasons | Astronomy & Space | 5 | 4 | 2026-07-26 |
| TRV·30 | Seating by the window | Travel, Tourism & Hospitality | 7 | 3 | 2026-07-26 |
| HIS·32 | Second serfdom | History, Society & Anthropology | 6 | 4 | 2026-07-26 |
| GOV·32 | Secret ballot | Government, Law & Civics | 6 | 4 | 2026-07-26 |
| MIL·33 | Security dilemma | Military, Conflict & Strategic Studies | 6 | 4 | 2026-07-26 |
| ENV·33 | Seed vigour versus germination | Environment, Agriculture & Food | 6 | 4 | 2026-07-26 |
| EAR·34 | Seismic shadow zone | Earth, Climate & Oceans | 6 | 2 | 2026-07-26 |
| PHY·29 | Selective heating | Physics | 6 | 5 | 2026-07-26 |
| CDA·197 | Self-consistency | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| PHI·31 | Self-defeating aims | Philosophy, Ethics & Religion | 6 | 4 | 2026-07-26 |
| CHM·32 | Self-healing coatings | Chemistry & Materials | 7 | 4 | 2026-07-26 |
| PHI·32 | Self-refuting claims | Philosophy, Ethics & Religion | 7 | 1 | 2026-07-26 |
| MIN·33 | Self-tickling | Mind & Behavior | 6 | 4 | 2026-07-26 |
| MIN·34 | Semantic satiation | Mind & Behavior | 6 | 4 | 2026-07-26 |
| CHM·33 | Semiconductor doping | Chemistry & Materials | 6 | 3 | 2026-07-26 |
| BIO·36 | Senescence | Biology & Ecology | 6 | 5 | 2026-07-26 |
| MIN·35 | Sense of time | Mind & Behavior | 3 | 3 | 2026-07-25 |
| CDA·198 | Separating the read model from the write model | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| MED·38 | Sepsis | Health & Medicine | 6 | 4 | 2026-07-26 |
| CDA·199 | Service discovery | Computing, Data & AI | 6 | 2 | 2026-07-26 |
| HOM·32 | Setting a stain | Home, Consumer & Everyday Life | 7 | 4 | 2026-07-26 |
| WRK·36 | Setting blocks | Work, Careers & Skilled Trades | 7 | 3 | 2026-07-26 |
| CHM·34 | Shape-memory alloys | Chemistry & Materials | 6 | 5 | 2026-07-26 |
| CDA·200 | Sharding | Computing, Data & AI | 6 | 6 | 2026-07-26 |
| FAM·27 | Shared memory in couples | Family, Relationships & Human Development | 6 | 3 | 2026-07-26 |
| HIS·33 | Sharing under scarcity | History, Society & Anthropology | 6 | 4 | 2026-07-26 |
| HOM·33 | Sharpness | Home, Consumer & Everyday Life | 6 | 5 | 2026-07-26 |
| ENV·34 | Shear-thickening food pastes | Environment, Agriculture & Food | 6 | 4 | 2026-07-26 |
| WRK·37 | Shift handover | Work, Careers & Skilled Trades | 6 | 4 | 2026-07-26 |
| WRK·38 | Shift work | Work, Careers & Skilled Trades | 6 | 3 | 2026-07-26 |
| MIL·34 | Shoot-and-scoot artillery | Military, Conflict & Strategic Studies | 6 | 5 | 2026-07-26 |
| TRV·31 | Shoulder-season price cliff | Travel, Tourism & Hospitality | 6 | 4 | 2026-07-26 |
| HOM·34 | Shower curtain drift | Home, Consumer & Everyday Life | 6 | 4 | 2026-07-26 |
| FAM·28 | Shrinking social circles | Family, Relationships & Human Development | 6 | 4 | 2026-07-26 |
| CDA·201 | Shuffling before sorting | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| FAM·29 | Sibling deidentification | Family, Relationships & Human Development | 7 | 3 | 2026-07-26 |
| FAM·30 | Sibling differences | Family, Relationships & Human Development | 5 | 3 | 2026-07-26 |
| FAM·31 | Sibling regression | Family, Relationships & Human Development | 6 | 3 | 2026-07-26 |
| MIL·35 | Siege camp attrition | Military, Conflict & Strategic Studies | 7 | 2 | 2026-07-26 |
| LAN·24 | Sign language | Language, Media & Communication | 6 | 5 | 2026-07-26 |
| CDA·202 | Signing out everywhere | Computing, Data & AI | 6 | 6 | 2026-07-26 |
| LAN·25 | Signing space | Language, Media & Communication | 7 | 0 | 2026-07-26 |
| CDA·203 | Silent data corruption | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| EAR·35 | Silicate weathering thermostat | Earth, Climate & Oceans | 6 | 2 | 2026-07-26 |
| GEO·34 | Silted harbours | Geography & Regional Studies | 7 | 5 | 2026-07-26 |
| FAM·32 | Similar partners | Family, Relationships & Human Development | 6 | 4 | 2026-07-26 |
| MAT·33 | Simpson's paradox | Mathematics & Statistics | 6 | 4 | 2026-07-26 |
| LAN·26 | Simultaneous interpreting | Language, Media & Communication | 6 | 2 | 2026-07-26 |
| TRV·32 | Single-queue service | Travel, Tourism & Hospitality | 6 | 5 | 2026-07-26 |
| GEO·35 | Sinking streams in karst | Geography & Regional Studies | 7 | 4 | 2026-07-26 |
| CDA·204 | Six names for one field | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| MAT·34 | Sizes of infinity | Mathematics & Statistics | 4 | 3 | 2026-07-25 |
| WRK·39 | Skilled diagnosis | Work, Careers & Skilled Trades | 5 | 3 | 2026-07-26 |
| AST·30 | Sky-background limit | Astronomy & Space | 6 | 4 | 2026-07-26 |
| MED·39 | Sleep | Health & Medicine | 6 | 4 | 2026-07-26 |
| MIN·36 | Sleeping on a problem | Mind & Behavior | 5 | 5 | 2026-07-26 |
| PHY·30 | Slippery ice | Physics | 5 | 4 | 2026-07-26 |
| EDU·26 | Small disruptions in a classroom | Education & Learning | 6 | 2 | 2026-07-26 |
| MAT·35 | Small-world networks | Mathematics & Statistics | 6 | 4 | 2026-07-26 |
| MIN·37 | Smell and memory | Mind & Behavior | 6 | 5 | 2026-07-26 |
| CHM·35 | Smell coding | Chemistry & Materials | 5 | 4 | 2026-07-26 |
| CHM·36 | Soap cleaning | Chemistry & Materials | 4 | 3 | 2026-07-25 |
| PHY·31 | Soap film colours | Physics | 7 | 4 | 2026-07-26 |
| MIN·38 | Social loafing | Mind & Behavior | 7 | 4 | 2026-07-26 |
| HIS·34 | Societal collapse | History, Society & Anthropology | 6 | 4 | 2026-07-26 |
| CDA·205 | Software aging | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| ENV·35 | Soil carbon loss under ploughing | Environment, Agriculture & Food | 6 | 3 | 2026-07-26 |
| EAR·36 | Soil formation | Earth, Climate & Oceans | 5 | 4 | 2026-07-26 |
| AST·31 | Solar cycle | Astronomy & Space | 6 | 4 | 2026-07-26 |
| PHY·32 | Sonoluminescence | Physics | 6 | 3 | 2026-07-26 |
| CDA·206 | Sorting more than fits | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| ENV·36 | Sourdough stability | Environment, Agriculture & Food | 6 | 4 | 2026-07-26 |
| TRV·33 | Souvenir craft convergence | Travel, Tourism & Hospitality | 6 | 0 | 2026-07-26 |
| AST·32 | Spacecraft cooling | Astronomy & Space | 6 | 5 | 2026-07-26 |
| EDU·27 | Spacing effect | Education & Learning | 6 | 4 | 2026-07-26 |
| PHI·33 | Speaking of the unspeakable | Philosophy, Ethics & Religion | 6 | 4 | 2026-07-26 |
| CDA·207 | Speculative decoding | Computing, Data & AI | 6 | 3 | 2026-07-26 |
| LAN·27 | Spelling reform | Language, Media & Communication | 6 | 3 | 2026-07-26 |
| EDU·28 | Split attention in materials | Education & Learning | 6 | 4 | 2026-07-26 |
| CDA·208 | Split-brain | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| PHI·34 | Splitting a person in two | Philosophy, Ethics & Religion | 6 | 1 | 2026-07-26 |
| CDA·209 | Splitting a system into services | Computing, Data & AI | 7 | 2 | 2026-07-26 |
| ART·34 | Stage lighting angle | Arts, Design & Culture | 6 | 3 | 2026-07-26 |
| GOV·33 | Standards of proof | Government, Law & Civics | 6 | 3 | 2026-07-26 |
| GOV·34 | Standing to sue | Government, Law & Civics | 6 | 4 | 2026-07-26 |
| AST·33 | Star colors | Astronomy & Space | 3 | 4 | 2026-07-25 |
| AST·34 | Star formation | Astronomy & Space | 7 | 4 | 2026-07-26 |
| PHY·33 | Static electricity | Physics | 4 | 2 | 2026-07-25 |
| GOV·35 | Statutes of limitation | Government, Law & Civics | 6 | 4 | 2026-07-26 |
| GOV·36 | Statutory interpretation canons | Government, Law & Civics | 7 | 2 | 2026-07-26 |
| MED·40 | Steady-state dosing | Health & Medicine | 6 | 2 | 2026-07-26 |
| MIL·36 | Stealth tradeoff | Military, Conflict & Strategic Studies | 6 | 3 | 2026-07-26 |
| AST·35 | Stellar hydrostatic balance | Astronomy & Space | 6 | 4 | 2026-07-26 |
| TRV·34 | Step climb | Travel, Tourism & Hospitality | 6 | 0 | 2026-07-26 |
| FAM·33 | Stepparent acceptance | Family, Relationships & Human Development | 6 | 0 | 2026-07-26 |
| BIO·37 | Sterile worker castes | Biology & Ecology | 7 | 4 | 2026-07-26 |
| ECO·35 | Stockout demand censoring | Economics & Business | 6 | 4 | 2026-07-26 |
| ART·35 | Story shape | Arts, Design & Culture | 6 | 4 | 2026-07-26 |
| MIL·37 | Strategic deception | Military, Conflict & Strategic Studies | 6 | 3 | 2026-07-26 |
| ENG·33 | Stress concentration | Engineering & Technology | 6 | 4 | 2026-07-26 |
| HOM·35 | Subscription inertia | Home, Consumer & Everyday Life | 5 | 3 | 2026-07-26 |
| EDU·29 | Summer learning loss | Education & Learning | 6 | 3 | 2026-07-26 |
| ECO·36 | Sunk cost | Economics & Business | 5 | 4 | 2026-07-26 |
| PHY·34 | Superconducting levitation | Physics | 6 | 4 | 2026-07-26 |
| PHY·35 | Supercooled water | Physics | 7 | 0 | 2026-07-26 |
| CHM·37 | Supercooling | Chemistry & Materials | 6 | 4 | 2026-07-26 |
| PHI·35 | Supererogation | Philosophy, Ethics & Religion | 6 | 3 | 2026-07-26 |
| ENV·37 | Supermarket tomato flavour | Environment, Agriculture & Food | 5 | 4 | 2026-07-26 |
| CDA·210 | Surrogate keys | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| MAT·36 | Survivorship bias | Mathematics & Statistics | 7 | 4 | 2026-07-26 |
| ENG·34 | Suspension bridge cables | Engineering & Technology | 4 | 4 | 2026-07-25 |
| BIO·38 | Sweet fruit, guarded seed | Biology & Ecology | 6 | 3 | 2026-07-26 |
| BIO·39 | Symbiosis | Biology & Ecology | 5 | 4 | 2026-07-26 |
| CDA·211 | Synthetic versus real users | Computing, Data & AI | 6 | 3 | 2026-07-26 |
| CDA·212 | System prompt priority | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| CDA·213 | Tags versus digests | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| CDA·214 | Tail latency | Computing, Data & AI | 7 | 4 | 2026-07-26 |
| PHI·36 | Taking moral advice on trust | Philosophy, Ethics & Religion | 7 | 4 | 2026-07-26 |
| CDA·215 | Talked out of its own rules | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| PHI·37 | Talking about what does not exist | Philosophy, Ethics & Religion | 6 | 4 | 2026-07-26 |
| GOV·37 | Tax incidence | Government, Law & Civics | 6 | 4 | 2026-07-26 |
| EDU·30 | Teacher attrition in hard schools | Education & Learning | 6 | 3 | 2026-07-26 |
| EDU·31 | Teacher expectations | Education & Learning | 7 | 3 | 2026-07-26 |
| EDU·32 | Teaching to the test | Education & Learning | 6 | 4 | 2026-07-26 |
| PHY·36 | Tears of wine | Physics | 6 | 3 | 2026-07-26 |
| CDA·216 | Technical debt | Computing, Data & AI | 6 | 3 | 2026-07-26 |
| ENG·35 | Technical standards | Engineering & Technology | 6 | 5 | 2026-07-26 |
| HIS·35 | Technology loss | History, Society & Anthropology | 5 | 3 | 2026-07-26 |
| FAM·34 | Teenage sleep phase | Family, Relationships & Human Development | 6 | 4 | 2026-07-26 |
| LAN·28 | Telephone bandwidth | Language, Media & Communication | 6 | 4 | 2026-07-26 |
| CDA·217 | Temperature | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| CHM·38 | Tempered glass | Chemistry & Materials | 6 | 3 | 2026-07-26 |
| SPT·36 | Tendon rehabilitation loading | Sports, Exercise & Recreation | 6 | 4 | 2026-07-26 |
| GOV·38 | Term limits | Government, Law & Civics | 6 | 4 | 2026-07-26 |
| PHY·37 | Terminal velocity of raindrops | Physics | 6 | 4 | 2026-07-26 |
| EDU·33 | Test validity | Education & Learning | 6 | 4 | 2026-07-26 |
| CDA·218 | Testability as a design property | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| MAT·37 | Testing many questions at once | Mathematics & Statistics | 6 | 4 | 2026-07-26 |
| LAN·29 | Text message tone | Language, Media & Communication | 6 | 4 | 2026-07-26 |
| CDA·219 | The agent loop | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| CDA·220 | The audit record as the product | Computing, Data & AI | 7 | 5 | 2026-07-26 |
| CDA·221 | The blocking commit | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| CDA·222 | The CAP theorem | Computing, Data & AI | 7 | 5 | 2026-07-26 |
| TRV·35 | The dish nobody orders | Travel, Tourism & Hospitality | 6 | 4 | 2026-07-26 |
| CDA·223 | The distributed monolith | Computing, Data & AI | 7 | 3 | 2026-07-26 |
| CDA·224 | The first process | Computing, Data & AI | 6 | 6 | 2026-07-26 |
| EDU·34 | The fourth-grade slump | Education & Learning | 6 | 0 | 2026-07-26 |
| CDA·225 | The middleman that reduces connections | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| CDA·226 | The noisy neighbour | Computing, Data & AI | 6 | 6 | 2026-07-26 |
| CDA·227 | The occasionally expensive operation | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| CDA·228 | The outbox | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| CDA·229 | The paved road | Computing, Data & AI | 6 | 3 | 2026-07-26 |
| CDA·230 | The price of being able to leave | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| CDA·231 | The publisher that knows no subscribers | Computing, Data & AI | 7 | 2 | 2026-07-26 |
| CDA·232 | The semantic layer | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| EDU·35 | The silent classroom | Education & Learning | 6 | 3 | 2026-07-26 |
| CDA·233 | The singleton regret | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| CDA·234 | The small files problem | Computing, Data & AI | 7 | 4 | 2026-07-26 |
| FAM·35 | The small last straw | Family, Relationships & Human Development | 6 | 3 | 2026-07-26 |
| CDA·235 | The sorting floor | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| CDA·236 | The test pyramid | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| CDA·237 | The untidy shape that answers faster | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| WRK·40 | The wire that carries nothing | Work, Careers & Skilled Trades | 7 | 0 | 2026-07-26 |
| PHY·38 | Thermal conductivity of touch | Physics | 6 | 4 | 2026-07-26 |
| ENG·36 | Thermal throttling | Engineering & Technology | 7 | 4 | 2026-07-26 |
| HOM·36 | Thermostat overshoot | Home, Consumer & Everyday Life | 6 | 4 | 2026-07-26 |
| CDA·238 | Thinking budget | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| CDA·239 | Three kinds of responsible person | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| CDA·240 | Three questions people treat as one | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| ENG·37 | Three-bladed turbines | Engineering & Technology | 6 | 4 | 2026-07-26 |
| AST·36 | Tidal locking | Astronomy & Space | 3 | 3 | 2026-07-25 |
| MAT·38 | Time average versus ensemble average | Mathematics & Statistics | 6 | 4 | 2026-07-26 |
| CDA·241 | Time to first token | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| GEO·36 | Time zones | Geography & Regional Studies | 6 | 5 | 2026-07-26 |
| TRV·36 | Tipping customs | Travel, Tourism & Hospitality | 6 | 2 | 2026-07-26 |
| FAM·36 | Toddler tantrums | Family, Relationships & Human Development | 6 | 3 | 2026-07-26 |
| CDA·242 | Tokenization | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| ENG·38 | Tolerance stack-up | Engineering & Technology | 7 | 4 | 2026-07-26 |
| CDA·243 | Tool calling boundary | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| CDA·244 | Tool granularity | Computing, Data & AI | 7 | 5 | 2026-07-26 |
| TRV·37 | Tourism seasonality | Travel, Tourism & Hospitality | 6 | 4 | 2026-07-26 |
| GEO·37 | Town spacing | Geography & Regional Studies | 6 | 5 | 2026-07-26 |
| ECO·37 | Trade credit | Economics & Business | 6 | 2 | 2026-07-26 |
| WRK·41 | Trade demarcation | Work, Careers & Skilled Trades | 6 | 2 | 2026-07-26 |
| HIS·36 | Trade diasporas | History, Society & Anthropology | 6 | 3 | 2026-07-26 |
| LAN·30 | Trade jargon | Language, Media & Communication | 6 | 3 | 2026-07-26 |
| SPT·37 | Trail braiding | Sports, Exercise & Recreation | 6 | 4 | 2026-07-26 |
| MIL·38 | Training cadre bottleneck | Military, Conflict & Strategic Studies | 6 | 4 | 2026-07-26 |
| SPT·38 | Training taper | Sports, Exercise & Recreation | 6 | 4 | 2026-07-26 |
| CDA·245 | Transactions on immutable storage | Computing, Data & AI | 6 | 6 | 2026-07-26 |
| LAN·31 | Transcribed speech | Language, Media & Communication | 6 | 4 | 2026-07-26 |
| EDU·36 | Transfer of learning | Education & Learning | 6 | 5 | 2026-07-26 |
| ENG·39 | Transformer inrush | Engineering & Technology | 7 | 4 | 2026-07-26 |
| CDA·246 | Transformer parallelism | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| LAN·32 | Translation equivalence | Language, Media & Communication | 5 | 3 | 2026-07-26 |
| MED·41 | Transplant rejection | Health & Medicine | 6 | 4 | 2026-07-26 |
| TRV·38 | Traveler herding | Travel, Tourism & Hospitality | 5 | 3 | 2026-07-26 |
| EAR·37 | Tree-ring evidence | Earth, Climate & Oceans | 3 | 4 | 2026-07-25 |
| ENV·38 | Trophic cost of meat | Environment, Agriculture & Food | 6 | 4 | 2026-07-26 |
| FAM·37 | Trust asymmetry | Family, Relationships & Human Development | 6 | 3 | 2026-07-26 |
| EAR·38 | Tsunami shoaling | Earth, Climate & Oceans | 6 | 4 | 2026-07-26 |
| EAR·39 | Turbidity currents | Earth, Climate & Oceans | 7 | 3 | 2026-07-26 |
| EDU·37 | Tutoring versus class size | Education & Learning | 6 | 4 | 2026-07-26 |
| CDA·247 | Twenty-five acronyms, nine pieces | Computing, Data & AI | 6 | 3 | 2026-07-26 |
| EAR·40 | Twice-daily tides | Earth, Climate & Oceans | 6 | 4 | 2026-07-26 |
| FAM·38 | Twin language delay | Family, Relationships & Human Development | 6 | 3 | 2026-07-26 |
| CDA·248 | Two stores for one truth | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| CDA·249 | Two systems, one record | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| ECO·38 | Two-sided market launch | Economics & Business | 6 | 3 | 2026-07-26 |
| CDA·250 | Two-stage retrieval | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| TRV·39 | Two-way ratings | Travel, Tourism & Hospitality | 7 | 0 | 2026-07-26 |
| ART·36 | Typeface voice | Arts, Design & Culture | 6 | 4 | 2026-07-26 |
| MAT·39 | Ubiquity of the bell curve | Mathematics & Statistics | 7 | 5 | 2026-07-26 |
| CDA·251 | Undefined behaviour | Computing, Data & AI | 7 | 4 | 2026-07-26 |
| PHI·38 | Underdetermination of theory | Philosophy, Ethics & Religion | 7 | 3 | 2026-07-26 |
| MIN·39 | Unfinished tasks | Mind & Behavior | 5 | 4 | 2026-07-26 |
| LAN·33 | Uninformative advertising | Language, Media & Communication | 6 | 4 | 2026-07-26 |
| HOM·37 | Unit-price inversion | Home, Consumer & Everyday Life | 6 | 4 | 2026-07-26 |
| CDA·252 | Unknown unknowns | Computing, Data & AI | 7 | 3 | 2026-07-26 |
| HIS·37 | Unplanned settlement form | History, Society & Anthropology | 6 | 4 | 2026-07-26 |
| MAT·40 | Unstable averages | Mathematics & Statistics | 6 | 4 | 2026-07-26 |
| MIL·39 | Unusable intelligence | Military, Conflict & Strategic Studies | 7 | 4 | 2026-07-26 |
| EDU·38 | Unused curriculum | Education & Learning | 6 | 4 | 2026-07-26 |
| LAN·34 | Unwritten vowels in abjads | Language, Media & Communication | 6 | 0 | 2026-07-26 |
| GEO·38 | Urban heat islands | Geography & Regional Studies | 6 | 4 | 2026-07-26 |
| HIS·38 | Urban mortality | History, Society & Anthropology | 6 | 5 | 2026-07-26 |
| ECO·39 | Vacancies alongside unemployment | Economics & Business | 6 | 3 | 2026-07-26 |
| PHI·39 | Vagueness | Philosophy, Ethics & Religion | 6 | 5 | 2026-07-26 |
| ART·37 | Value of the original | Arts, Design & Culture | 6 | 4 | 2026-07-26 |
| EDU·39 | Value-added ranking instability | Education & Learning | 6 | 4 | 2026-07-26 |
| ART·38 | Varnish removal | Arts, Design & Culture | 6 | 3 | 2026-07-26 |
| AST·37 | Venus superrotation | Astronomy & Space | 7 | 3 | 2026-07-26 |
| MIL·40 | Verified disarmament | Military, Conflict & Strategic Studies | 7 | 0 | 2026-07-26 |
| BIO·40 | Vernalization | Biology & Ecology | 6 | 3 | 2026-07-26 |
| CDA·253 | Vertical and horizontal scaling | Computing, Data & AI | 6 | 6 | 2026-07-26 |
| ENG·40 | Vibration isolator resonance | Engineering & Technology | 7 | 3 | 2026-07-26 |
| SPT·39 | Video review boundaries | Sports, Exercise & Recreation | 6 | 4 | 2026-07-26 |
| ART·39 | Vinegar syndrome | Arts, Design & Culture | 6 | 4 | 2026-07-26 |
| BIO·41 | Virulence and transmission | Biology & Ecology | 6 | 4 | 2026-07-26 |
| TRV·40 | Visa reciprocity | Travel, Tourism & Hospitality | 7 | 2 | 2026-07-26 |
| CHM·39 | Viscoelastic putty | Chemistry & Materials | 6 | 2 | 2026-07-26 |
| ART·40 | Visual grouping | Arts, Design & Culture | 6 | 5 | 2026-07-26 |
| EDU·40 | Vocabulary gap widening | Education & Learning | 6 | 3 | 2026-07-26 |
| ART·41 | Voice recording mismatch | Arts, Design & Culture | 6 | 4 | 2026-07-26 |
| PHY·39 | Vortex shedding | Physics | 6 | 2 | 2026-07-26 |
| GOV·39 | Voting rules | Government, Law & Civics | 5 | 5 | 2026-07-26 |
| LAN·35 | Vowel chain shifts | Language, Media & Communication | 6 | 0 | 2026-07-26 |
| ECO·40 | Wage stickiness | Economics & Business | 6 | 3 | 2026-07-26 |
| CDA·254 | Warm reuse leaks | Computing, Data & AI | 7 | 5 | 2026-07-26 |
| HOM·38 | Warranty timing | Home, Consumer & Everyday Life | 6 | 4 | 2026-07-26 |
| HOM·39 | Washing machine odour | Home, Consumer & Everyday Life | 6 | 3 | 2026-07-26 |
| ENG·41 | Water hammer | Engineering & Technology | 7 | 4 | 2026-07-26 |
| MIN·40 | Wayfinding | Mind & Behavior | 5 | 3 | 2026-07-26 |
| PHI·40 | Weakness of will | Philosophy, Ethics & Religion | 6 | 5 | 2026-07-26 |
| ENV·39 | Weed seed banks | Environment, Agriculture & Food | 6 | 4 | 2026-07-26 |
| SPT·40 | Weight cutting | Sports, Exercise & Recreation | 7 | 0 | 2026-07-26 |
| WRK·42 | Welding distortion | Work, Careers & Skilled Trades | 6 | 0 | 2026-07-26 |
| CDA·255 | What a list of numbers remembers | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| CDA·256 | What an assistant should forget | Computing, Data & AI | 6 | 6 | 2026-07-26 |
| AST·38 | What is a black hole? | Astronomy & Space | 7 | 6 | 2026-07-25 |
| ECO·41 | What is inflation? | Economics & Business | 7 | 7 | 2026-07-25 |
| PHI·41 | What makes an argument logically valid? | Philosophy, Ethics & Religion | 6 | 7 | 2026-07-25 |
| ENV·40 | What makes bread rise? | Environment, Agriculture & Food | 7 | 7 | 2026-07-25 |
| CDA·257 | What one row stands for | Computing, Data & AI | 6 | 6 | 2026-07-26 |
| CDA·258 | When removing duplication hurts | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| CDA·259 | When responsibility transfers | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| CDA·260 | When the best step now is safe | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| CDA·261 | Where a fact lives in a model | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| GEO·39 | Where parks end up | Geography & Regional Studies | 6 | 3 | 2026-07-26 |
| CDA·262 | Where the time actually goes | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| CDA·263 | Where the transform sits | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| CDA·264 | Which record is the real one | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| PHY·40 | Whip crack | Physics | 7 | 4 | 2026-07-26 |
| GOV·40 | Whistleblower protection | Government, Law & Civics | 6 | 0 | 2026-07-26 |
| LAN·36 | Whistled languages | Language, Media & Communication | 6 | 2 | 2026-07-26 |
| WRK·43 | Who leaves first | Work, Careers & Skilled Trades | 7 | 4 | 2026-07-26 |
| CDA·265 | Why a code sent to your phone does not stop phishing | Computing, Data & AI | 7 | 4 | 2026-07-26 |
| CDA·266 | Why adding a worker stops the others | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| GOV·41 | Why do democracies separate powers? | Government, Law & Civics | 6 | 5 | 2026-07-25 |
| EAR·41 | Why do earthquakes happen? | Earth, Climate & Oceans | 6 | 7 | 2026-07-25 |
| LAN·37 | Why do languages change over time? | Language, Media & Communication | 7 | 6 | 2026-07-25 |
| BIO·42 | Why do leaves change color? | Biology & Ecology | 6 | 6 | 2026-07-25 |
| MIN·41 | Why do we procrastinate? | Mind & Behavior | 7 | 6 | 2026-07-25 |
| PHY·41 | Why is the sky blue? | Physics | 6 | 6 | 2026-07-25 |
| CDA·267 | Why the average recovery time lies | Computing, Data & AI | 6 | 3 | 2026-07-26 |
| AST·39 | Widmanstatten pattern | Astronomy & Space | 7 | 3 | 2026-07-26 |
| FAM·39 | Widowhood and health | Family, Relationships & Human Development | 6 | 0 | 2026-07-26 |
| ENG·42 | Wind farm wake losses | Engineering & Technology | 6 | 3 | 2026-07-26 |
| GEO·40 | Windward wealth divide | Geography & Regional Studies | 6 | 4 | 2026-07-26 |
| ECO·42 | Winner's curse | Economics & Business | 6 | 3 | 2026-07-26 |
| HIS·39 | Witch-hunt cascades | History, Society & Anthropology | 6 | 4 | 2026-07-26 |
| HOM·40 | Wobbly table | Home, Consumer & Everyday Life | 6 | 3 | 2026-07-26 |
| LAN·38 | Word length | Language, Media & Communication | 5 | 3 | 2026-07-26 |
| LAN·39 | Word order | Language, Media & Communication | 6 | 4 | 2026-07-26 |
| LAN·40 | Word spacing in writing | Language, Media & Communication | 7 | 0 | 2026-07-26 |
| LAN·41 | Wordless instructions | Language, Media & Communication | 6 | 0 | 2026-07-26 |
| CDA·268 | Words stored by their beginnings | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| CHM·40 | Work hardening | Chemistry & Materials | 6 | 4 | 2026-07-26 |
| WRK·44 | Working to rule | Work, Careers & Skilled Trades | 6 | 4 | 2026-07-26 |
| FAM·40 | Worst behaviour at home | Family, Relationships & Human Development | 6 | 4 | 2026-07-26 |
| MED·42 | Wound healing | Health & Medicine | 6 | 4 | 2026-07-26 |
| CDA·269 | Wrapping without changing | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| CDA·270 | Write amplification | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| CDA·271 | Writing down what you could not determine | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| HIS·40 | Writing invention | History, Society & Anthropology | 6 | 3 | 2026-07-26 |
| CDA·272 | Writing the test first | Computing, Data & AI | 6 | 4 | 2026-07-26 |
| CDA·273 | Wrong with nothing missing | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| AST·40 | Yarkovsky effect | Astronomy & Space | 6 | 3 | 2026-07-26 |
| ENV·41 | Yield and protein in wheat | Environment, Agriculture & Food | 6 | 3 | 2026-07-26 |
| CDA·274 | You cannot un-issue a signature | Computing, Data & AI | 6 | 5 | 2026-07-26 |
| AST·41 | Zodiacal dust replenishment | Astronomy & Space | 6 | 3 | 2026-07-26 |