科学与环境
This bird flies thousands of miles, but its wings have a catch
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Scientists have uncovered an unexpected trade-off in the wings of the European nightjar, a bird that migrates thousands of kilometers but sacrifices high-speed flight efficiency to hunt insects with remarkable agility. Even more surprisingly, it generates thrust on the upward win
Scientists have uncovered an unexpected trade-off in the wings of the European nightjar, a bird that migrates thousands of kilometers but sacrifices high-speed flight efficiency to hunt insects with remarkable agility. Even more surprisingly, it generates thrust on the upward wingbeat, a technique that could inspire new flying technologies.
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Scientists make stunning discovery that could help explain why life exists
Scientists have discovered that the universe's fundamental physical constants may be finely balanced to make life possible. Even tiny changes to these constants could make liquids too thick or too thin for essential biological processes, potentially preventing life as we know it.
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Scientists discover how deep sleep builds muscle, burns fat, and boosts the brain
Scientists have discovered a surprising two-way relationship between sleep and growth hormone, revealing how the brain carefully balances physical recovery with wakefulness. The findings could help explain why poor sleep harms metabolism and brain health, potentially opening the
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Scientists predicted doomsday for November 13, 2026. Should we be worried?
In 1960, scientists predicted that runaway population growth would bring humanity to the brink of destruction on November 13, 2026, and their mathematical forecasts remained surprisingly accurate for decades. But as birth rates declined and population growth slowed, the terrifyin
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Scientists discover cell division does more than make new cells: It helps reshape tissues
Every time a tissue grows or renews itself, cells must divide inside an already crowded environment. That creates a fundamental problem that scientists have not fully understood: How does a tightly packed sheet of cells make room for two daughter cells when there was once only on
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Scientists discover a plastic-eating “Pac-Man” enzyme with a surprising secret
Scientists have discovered a remarkable “Pac-Man enzyme” that helps bacteria devour certain types of plastic and may offer new hope in the fight against plastic pollution. Researchers found that several biodegradable plastics completely broke down in soil within about a year, whi
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