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FLASHLIGHT POWERED BY BODY HEAT
15-year-old builds flashlight powered by body heat: How her hollow aluminium tube generated electricity to keep an LED lit for more than 20 minutesA 15-year-old Canadian student built a battery-free flashlight that uses the temperature difference between a warm human palm and cooler ai...- In 1996, Florida researchers whitened 7 shops in a Cocoa strip mall; roof surfaces fell by as much as 70°F, cooling energy dropped 25.3%, and peak demand dropped 40.3%In an innovative Florida trial, it was found that white roofs significantly decreased heat levels and energy usage. Traditionally, unpainte...
- In 1997, NPS installed 3 solar hot-water systems at Oklahoma’s Chickasaw park. 2 years later, the largest system supplied 18,194 kWh annually, replacing electric heatingIn 1997, the National Park Service replaced electric heaters at Oklahoma’s Chickasaw National Recreation Area with three solar hot-water sy...
- Students could face a school holiday as Ohio heat index nears 102°F — but whether classes are canceled depends on one crucial building featureSome Avon Lake schools closed due to extreme heat while others remained open. Older buildings without air conditioning became unsafe for st...
- Science says microwaves don’t really cook food from the inside out, here’s what happens inside the ovenMicrowaves bounce off the metal walls inside the oven, and when the reflected waves interact with incoming waves, they can create areas of ...
- In 1995, Florida researchers coated a Cocoa Beach school roof white; over the following year, chiller energy use fell 10%, saving 13,000 kWh, while peak demand fell 35%A study conducted in Florida revealed that white roofs can drastically lower cooling costs, marking a significant achievement in the realm ...
- In 1896, American electrical engineer laid the foundation for modern electric cooking appliances with the invention of revolutionary electric stoveIn 1896, American electrical engineer William S. Hadaway Jr. received the first U.S. patent for an electric stove. His design used resistan...
- White pillowcase cleaning hack: How to remove yellow stains, body oils and sweat from your bedding and make it bright againA simple white pillowcase cleaning hack can help remove stubborn yellow stains caused by sweat, body oils and skincare products. Experts ex...
- In 2020, Stanford's radiative cooling technology reached a California supermarket roof; panels were estimated to save 15% to 20% energy, while a Tempe bus shelter film was reported 30°F coolerNew technology allows surfaces to cool themselves under direct sunlight. This innovation reflects sunlight and radiates heat into outer spa...
- In 2023, researchers modeled fluid-filled microchannel windows; computer simulations estimated the liquid system could cut building energy use by 43 percentResearchers are developing innovative liquid windows that can control heat and light transmission. These tunable windows could potentially ...
- In 2020, researchers tested a self-moistening hydrogel mat under solar panels; it cooled them by at least 10°C and boosted output by up to 19%New research introduces a cooling gel for solar panels. This gel absorbs moisture at night and releases it as vapor during the day. The coo...
- In 2023, Princeton researchers tested a naturally ventilated cooling box; it stayed below outdoor air while using radiative cooling and buoyancy-driven airflowResearchers have unveiled a groundbreaking cooling technique designed for buildings that eliminates the need for traditional air conditioni...
- While Americans watched TV, used personal computers, One Alaska village was still waiting for electricity during 1980sIn the early days of Alaska, wood was the primary source of heat and electricity. The gold rushes sparked a surge in power requirements acr...
- A hotter planet puts 145 mn Indian children under greater stress every year: StudyIndia sees 61 percent of children facing extra heat stress annually. Global research shows climate change doubles dangerous heat exposure f...
- In a 2022 Brazil trial, 52 lambs spent 60 days under solar-panel shade; researchers reported lower body temperatures and about 4% better feed efficiency on hotter daysA comprehensive study conducted in Brazil revealed that lambs grazing beneath solar panels experienced reduced body temperatures, which led...
- Rains Raksha in India may not be enough to fight $250 billion heat billExtreme heat poses a significant economic threat to India's workforce and GDP. Lost labor hours and reduced productivity impact both worker...
- From 2011 to 2023, nearly million patients visited Chicago hospital emergency rooms, urgent care centers, researchers found trending illness, injuries when temperature rises in U.S.Researchers found an association between high temperatures and individual medical problems, but that's not the same as a cause-and-effect, ...
- Scientists tested reflective pavement through an Australian summer, and the road surface stayed cooler, but midday radiant heat increased above itA western Sydney trial revealed reflective roads cool surfaces but raise pedestrian temperatures. This study tracked the trade-off over a y...
- This 12-year-old schoolgirl designed a solar-powered heated blanket for homeless people after seeing them struggle through winterRebecca Young was 12 when she designed a solar-powered heated blanket to help people experiencing homelessness stay warm without access to ...
- Phoenix installed nine temporary shades across parks to fight extreme heat; surfaces became 46°F cooler, while adding a solar-run mister lowered air temperature by another 10°FPhoenix tested nine temporary, artist-designed shade structures across its parks in 2025 as part of an experiment to tackle extreme heat. T...
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