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科学与环境

Scientists may have misread a 2-billion-year-old clue about Earth

Scientists have found that a famous 2-billion-year-old chemical signature, once thought to record a massive global change in Earth’s carbon cycle, may instead have been produced by local magma, hydrocarbons, and methane-eating microbes. The discovery raises new questions about wh

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Can ‘eSUV’ e-bikes really go from trail to town?
科技与人工智能

Can ‘eSUV’ e-bikes really go from trail to town?

Have you ever wanted an electric bike that easily transitions from the drudgery of urban asphalt to adventures in gravel and dirt? That's what a subclass of so-called "electric SUV" (eSUV) e-bikes claims to do, with their wide, all-terrain tires and front and rear suspension, plu

The Verge ·

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科学与环境

These tropical trees breathe at night to survive drought

Some tropical trees have evolved a clever way to survive drought by taking in carbon dioxide at night, allowing them to keep their pores closed during the hot daytime and conserve water. By comparing three Clusia species, researchers discovered that this water-saving form of phot

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科学与环境

This new concrete is stronger and pulls CO2 from the air

Researchers have created a concrete mixture that is both stronger and capable of absorbing carbon dioxide. The best formula, combining zeolite with bamboo biochar, boosted compressive strength by 7.48% and tensile strength by 15% compared with conventional concrete. It also captu

All Top News -- ScienceDaily ·