News

  1. Animals

    Cats kill more than one billion birds each year

    New analysis doubles estimate of avian death tolls, revealing that hunting felines take bigger bite out of wildlife than expected.

    By Susan Milius
  2. Life

    Caribbean’s coral reefs approach tipping point

    A survey of 19 colonies suggests many may soon begin to shrink.

    By Rachel Ehrenberg
  3. Life

    Chimps’ baby teeth don’t predict weaning

    The age at which a chimpanzee gets its first molar tooth doesn't predict when it will stop nursing.

    By Erin Wayman
  4. Earth

    Human-made waste heat warms climate

    Energy dissipated as heat in cities can cause regional temperature changes, simulations suggest.