News

  1. Animals

    Swimming evolved several times in treetop ants

    Certain ants living in tropical forest canopies turn out to be fine swimmers.

    By Susan Milius
  2. Earth

    Earth’s deep interior holds vast reservoir of water

    Ocean’s worth of water trapped in Earth’s mantle, lab experiments and seismic data suggest.

    By Rachel Ehrenberg
  3. Life

    Dinos straddled line between cold- and warm-blooded

    Tyrannosaurus rex and other dinosaurs straddled line between cold- and warm-blood, a new analysis finds.

    By Meghan Rosen
  4. Genetics

    Chimp and human lineages may have split twice as long ago as thought

    New estimates of chimpanzee mutation rates suggest humans and chimps last shared a common ancestor 13 million years ago.