News

  1. Earth

    Arctic has taken a turn for the warmer

    Northern climate has changed substantially in the last five years, and the shift is probably permanent.

    By Janet Raloff
  2. Humans

    Neandertals’ mammoth building project

    Stone Age people’s evolutionary cousins may have constructed earliest bone structures.

    By Bruce Bower
  3. Earth

    Polar ice sheets are synchronized swimmers

    Glaciers in the Northern and Southern Hemispheres advance and retreat together.

    By Nick Bascom
  4. Health & Medicine

    Immune booster also works in reverse

    Injections of the protein interleukin-2 can calm runaway defenses that damage tissues in the body, two studies show.

    By Nathan Seppa
  5. Health & Medicine

    Weaker brain links found in psychopaths

    Decreased communication between emotional and executive centers may contribute to the mental disorder.