Feature

  1. Milky Way will bite the dust

    Eventual collision with Andromeda to shake up the solar system.

    By Nadia Drake

  2. Kissing, and missing, human cousins

    DNA paints a contested picture of Stone Age interbreeding.

    By Bruce Bower

  3. Polar bears have seen hard times

    Two genetic studies extend the Arctic icon’s lineage way back.

    By Susan Milius

  4. Quantum hops

    A little closer to teleportation and new computers.

    By Alexandra Witze

  5. Finding new ways to spell L-I-F-E

    XNA molecules join DNA and RNA in the genetic catalog.

    By Rachel Ehrenberg

  6. Prions may cause Alzheimer’s

    Similarity found with destructive protein behind mad cow.

    By Laura Sanders

  7. Earth’s new neighbor looks familiar

    Planet discovered in Alpha Centauri, just a few light-years away.

    By Nadia Drake
  8. Life

    Women may make new eggs

    If true, finding could lead to new fertility treatments.

    By Tina Hesman Saey
  9. Science & Society

    Scientists take on Twitter

    Social media comes into its own as a tool and a subject for study.

    By Rachel Ehrenberg
  10. Neuroscience

    Your social brain

    Nerve cells notice mistakes and learn from others’ desires.

    By Laura Sanders
  11. Climate

    Climate change goes to extremes

    Some recent weird weather tied to warming.

    By Janet Raloff
  12. Humans

    Bionic women (and men) get closer to reality

    Prosthetics and new therapies restore abilities to move, see, walk.

    By Rachel Ehrenberg