Feature

  1. Out on a limb

    Fossils suggest early bipedal hominids still climbed.

    By Erin Wayman

  2. Milky Way will bite the dust

    Eventual collision with Andromeda to shake up the solar system.

    By Nadia Drake

  3. Kissing, and missing, human cousins

    DNA paints a contested picture of Stone Age interbreeding.

    By Bruce Bower

  4. Polar bears have seen hard times

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

    By Susan Milius

  5. Quantum hops

    A little closer to teleportation and new computers.

    By Alexandra Witze

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

    XNA molecules join DNA and RNA in the genetic catalog.