News

  1. Astronomy

    Astronomers explain planets’ backward motion

    Giant planets in distant orbits may be reversing the direction of their closer-in neighbors.

    By Andrew Grant
  2. Life

    Steroids boost muscles for the long haul

    Experiments in mice suggest that effects don’t end when doping does.

    By Tina Hesman Saey
  3. Cosmology

    Dark energy search gets murkier

    Supernova measurements muddle scientists’ efforts to explain universe’s accelerating expansion.

    By Gabriel Popkin
  4. Health & Medicine

    Exercise seems to limit bad falls in elderly

    Regular exercise might limit broken bones due to bad falls in elderly people.

    By Nathan Seppa
  5. Life

    Morel mushroom may grow crop of its own

    A fungus could be a farmer itself, sowing, cultivating and harvesting bacteria.