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  1. Life

    Getting dissed could be partly genetic

    In marmot social networks, victimization may be to some degree heritable.

    By Susan Milius
  2. Life

    RNA, obey

    Researchers make RNA machines that can change cells’ behavior.

    By Tina Hesman Saey
  3. Space

    Cosmic rebirth

    Circular patterns in the universe's pervasive background radiation suggest that the Big Bang was not the beginning of the universe, but only the latest of its incarnations.

    By Ron Cowen
  4. Life

    Mammal size maxed out after dinos’ demise

    Opening new ecological niches led to a worldwide boom in size, up to a point.

    By Susan Milius
  5. Health & Medicine

    A few stray hairs

    Brain regions that sense the world can also flick a whisker, research in mice shows, suggesting that the organ’s division of labor is not so clear-cut.