News

  1. Planetary Science

    Hole from on high

    Researchers discover a fresh meteorite impact crater using Google Earth.

    By Sid Perkins
  2. Ecosystems

    Gut first

    A crawling caterpillar’s gut moves forward before the rest of its body does.

    By Rachel Ehrenberg
  3. Animals

    Fearless tadpoles give invaders the edge

    Clueless larvae don’t heed the scent of nonnative turtles, giving newcomers an edge over native species, a European study finds.

    By Susan Milius
  4. Health & Medicine

    Diet and behavior changes may slow Alzheimer’s

    A new study in dogs finds that antioxidants and enriched lifestyle can ward off symptoms, and suggests brain plaques may not be the cause of the disease.