News

  1. Planetary Science

    Making Mercury

    New computer simulations of Mercury's violent formation account for the planet's abundance of heavy elements and also reveal that some of the debris generated by the collision could have found its way to Earth and Venus.

    By Ron Cowen
  2. Animals

    Hummingbirds can clock flower refills

    Hummingbirds can keep track of when a particular flower has replenished its nectar and is worth visiting again.

    By Susan Milius
  3. Archaeology

    Early farmers took time to tame wheat

    Domesticated varieties of wheat emerged gradually in the prehistoric Near East over a roughly 3,000-year span.

    By Bruce Bower
  4. Health & Medicine

    Building a Bladder: Patients for the first time benefit from lab-grown organs

    The humble bladder is now the world's first bioengineered internal organ to work in people.