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  1. Humans

    Neandertal DNA from cave mud shows two waves of migration across Eurasia

    Genetic material left behind in sediments reveals new details about how ancient humans once spread across the continent.

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  2. Planetary Science

    Earth sweeps up 5,200 tons of extraterrestrial dust each year

    Thousands of micrometeorites collected from Antarctica come from both comets and asteroids, a new study suggests.

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  3. Life

    Only 3 percent of Earth’s land hasn’t been marred by humans

    A sweeping survey of terrestrial ecosystems finds that vanishingly little land houses all the animals it used to. Species reintroductions could help.

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  4. Health & Medicine

    The P.1