
Tech
A new solar-powered gel purifies water in a flash
The unusual, fruit-inspired structure of this material provides quick filtration that could satisfy people's daily water needs.
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The unusual, fruit-inspired structure of this material provides quick filtration that could satisfy people's daily water needs.
Wind farms, solar panels and more take up land and may harm wildlife. Researchers are working to resolve this conflict.
Modern Amazonians make nutrient-rich soil from ash, food scraps and burns. The soil strongly resembles ancient “dark earth” found in the region.
Keeping buildings cool can use a lot of energy. Thanks to quantum computing, engineers designed a coating to cut the warming light that enters windows.
Instead of throwing unneeded things away, scientists recommend moving to a cycle of reducing, reusing, repairing and remaking old things into new ones.
Learn how you can limit the climate-warming gases associated with what you eat, the products you buy and the energy you use.
Nations are charting how they might ‘zero’ out their releases of climate-warming gases. Success might greatly lower the risks of climate catastrophes.
A new study finds they can leak benzene and other harmful chemicals into homes, sometimes at very high levels.
Sewage sludge. Cow dung. They’re not just waste — scientists are finding uses for processed poop in construction materials.
Switching over to clean, renewable power — and away from fossil fuels — could save trillions of dollars by 2050, a new study finds.