News

  1. Life

    Replaying evolution

    By watching bacteria evolve in the lab for 20 years, researchers show that evolution may be rather capricious.

    By Patrick Barry
  2. Humans

    Fostering gains

    New studies indicate that abused and neglected kids benefit from living with relatives and from high-quality foster care services.

    By Bruce Bower
  3. Earth

    Natural heat

    Heat from the decay of radioactive elements deep within the planet could meet Earth’s energy needs almost three times over — if we could harness all of it.

    By Sid Perkins
  4. Planetary Science

    Dispatch from Mars, Sol 4

    The good news is a tentative sighting of ice by the Mars Phoenix Lander.