News

  1. Earth

    Extracting Estrogens: Modern treatment plants strip hormone from sewage

    New research helps explain why state-of-the-art sewage treatment facilities are more effective than conventional plants at removing certain sex hormones from sludge.

    By Ben Harder
  2. Astronomy

    Repulsive Astronomy: Strengthening the case for dark energy

    Astronomers have found new evidence that a mysterious substance, dubbed dark energy, is ripping the cosmos apart, causing the universe to expand at an ever-faster rate.

    By Ron Cowen
  3. Animals

    Why do two-sex geckos triumph?

    Just the smell of an invasive species of gecko suppresses egg laying and subdues aggression in a resident.

    By Susan Milius
  4. Animals

    Maybe what Polly wants is a new toy

    Changing the toys in a parrot's cage may ease the bird's tendency to fear new things.