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  1. Health & Medicine

    When Ebola Looms: Human outbreaks follow animal infections

    A network of organizations in an African region prone to Ebola epidemics has identified the virus in wild-animal remains prior to two recent human outbreaks, suggesting that animal carcasses may provide timely clues that could prevent the disease from spreading to people.

    By Ben Harder
  2. Astronomy

    Puny Parent? Planets may form around tiny orbs

    Barely more massive than a planet itself, a tiny failed star 500 light-years from Earth is nonetheless cloaked in a disk of gas and dust from which planets may coalesce.

    By Ron Cowen
  3. Health & Medicine

    Disease Detector: Chemical test may spot Alzheimer’s

    A new test that detects very low levels of protein clumps associated with Alzheimer's may provide an early warning for the disease.