News

  1. Humans

    Altruistic kidney donors help many

    Mass exchanges result in more kidneys for difficult-to-match recipients.

    By Rachel Ehrenberg
  2. Earth

    Night lights may foster depression

    In animals, chronic dim light triggers brain changes that disappear with the return of nightlong darkness.

    By Janet Raloff
  3. Space

    Crowd sourcing comes to astronomy

    Researchers comb the Internet for snapshots of a comet and use the collected images to calculate its orbit.

    By Nadia Drake
  4. Life

    Polar bears’ ancient roots pushed way back

    Full genetic blueprints suggest the animals split from brown bears millions of years ago.

    By Devin Powell
  5. Life

    Fake jellyfish so real it even swims

    Constructed of silicone and heart cells, medusoid moves like the real thing.