News in Brief

  1. Animals

    Elephant diets changed millions of years before their teeth

    The animals fed on grasses long before their molars could grind the tough plants.

    By Erin Wayman
  2. Astronomy

    Cradled galaxies betray violent past

    Hubble snaps ‘the Penguin’ and its egg-shaped companion.

    By Jessica Shugart
  3. Chemistry

    High methane in drinking water near fracking sites

    Well construction and geology may both play a role in pollution.

    By Rachel Ehrenberg
  4. Life

    Brain cell insulators are short-timers

    Limited myelin production time may make it harder to repair nerve casings damaged by multiple sclerosis.

    By Tina Hesman Saey
  5. Earth

    Satellite captures Earth’s greenery

    Orbiting camera detects reflected light to determine the extent of the planet's vegetation.