News

  1. Humans

    Migrants settled New World in tandem

    A genetic investigation of two rare types of mitochondrial DNA in Native Americans suggests that people first entered the Americas in two groups, following separate routes.

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  2. Space

    Tuned in to new noise from the cosmos

    Unexplained radio noise may be signals from the early universe.

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  3. Life

    Fifty-two things to do with a bat wing

    Bats swim, run, flirt and do lots of other nonflight jobs with their wings -- a fact that may have influenced evolution of the wing's architecture.

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  4. Health & Medicine

    Record low for human blood oxygen levels

    Study of Mt.