Free School Clothes: a Cardiff school-gate box became a 200-school uniform swap site
A Cardiff parent's collection box for outgrown uniforms grew into a site where families swap school clothes within one school community; 8,000 items so far.
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500 已發佈案例 · 定期更新The Falkirk Wheel replaced 11 dead locks with a rotating lift that runs on eight kettles
A 35m rotating boat lift rejoined Scotland's Union and Forth & Clyde canals in 2002 — balanced gondolas turn using the energy of boiling eight kettles.
閱讀案例Facebook ran a VCG ad auction, pricing by displaced value, so advertisers can't game it
Each winner pays for the value its ad displaces, and ads compete with organic posts in the feed.
閱讀案例Enjay's Lepido turns greasy kitchen fumes into restaurant heating
A Malmö start-up redesigned the heat exchanger so kitchen grease flows past the coils — cutting restaurant heating bills by up to 90%.
閱讀案例Dyslexie broke typography's uniformity rules so letters can't flip
Dyslexic designer Christian Boer made letters bottom-heavy and asymmetric so they look wrong when mentally rotated — 300,000 downloads since 2011.
閱讀案例Washington DC keeps its legal code on GitHub, and a citizen's pull request fixed a typo
DC stores its enacted laws as XML on GitHub, which feeds its official code site automatically.
閱讀案例Crane Currency put a million microlenses on the $100 bill to make a tilting 3-D ribbon
Micro-optics magnify hidden images, so Liberty Bells morph into '100' when the note is tilted.
閱讀案例CPS Energy paid San Antonians 3 cents a kWh to host third-party rooftop solar
The utility's cheap financing flipped solar from a cost to a roof-rent credit and got 2,000 applicants in three days.
閱讀案例Carnegie Mellon's bboard fixed misread jokes with a sideways smiley, :-)
After a mercury-elevator joke was taken seriously, Scott Fahlman proposed :-) and :-( as tone markers.
閱讀案例Chiltern Railways replaced a legally required 'parly' train with a once-a-week ghost bus
A one-way weekly bus keeps a rail route open without paying for the train or the lengthy closure process.
閱讀案例Cecile Steele's 500-chick delivery error launched the US broiler chicken industry
In 1923 a Delaware homemaker kept a misdelivered 500 chicks and sold them for meat — the accidental start of America's broiler chicken industry.
閱讀案例Sixteen Claude agents built a C compiler, steered by test harnesses and a GCC oracle
Lock-file task claiming and a GCC reference split the Linux-kernel bugs among 16 agents (about $20,000).
閱讀案例Boeing tested cabin altitude on 502 volunteers in a sealed chamber, then chose 6,000 ft
Boeing locked volunteers in a simulated 20-hour flight at different altitudes to pick the 787 and 777X cabin pressure.
閱讀案例BioFiltro's worm beds cut ammonia from dairy wastewater ~90%, but methane data conflict
A California dairy runs manure water through wood chips and river rock where worms and microbes work; ammonia fell in a UC Davis study, methane data disagree.
閱讀案例BARR used weekly teacher-staff meetings to halve freshman failure at St. Louis Park High
Pooling attendance, grades and home context on each ninth-grader beat $7 billion of school turnarounds.
閱讀案例Avani chopped Himalayan pine needles to feed gasifiers, paying villagers to cut fire risk
Chopping needles made them dense enough to gasify, so a fire hazard became village power and wages.
閱讀案例The Falcons took stadium food back from the concessionaire, cut prices, and sold 53% more
By swapping the concessionaire's upfront check and revenue share for a management fee, the Falcons set 'street prices'. Sales beat their forecast twice over.
閱讀案例Thailand imported a 1mm wasp from South America to end the cassava mealybug crisis
A host-specific parasitic wasp was mass-reared and dropped from planes, replacing pesticides.
閱讀案例SpaceX stopped catching $6M fairings and just fished them out of the sea
Net-catching fairings worked under 50% of the time in Atlantic swells; the fix was deleting the catch — composites float, so a crane boat now recovers 99%.
閱讀案例Norway made EVs the only sensible purchase by deleting the taxes that price cars
A 1990 protest by A-ha's singer won EVs a purchase-tax exemption; stacked exemptions drove EVs to three in four new cars sold by 2020.
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