News

  1. Among stars, heavyweight champ

    Stellar record-holder weighs in at 265 times mass of sun.

    By Ron Cowen
  2. Paleontology

    Oldest dog debated

    A fossil jaw may, or may not, come from the oldest known example of man’s best friend.

    By Bruce Bower
  3. Planetary Science

    Hole from on high

    Researchers discover a fresh meteorite impact crater using Google Earth.

    By Sid Perkins
  4. Ecosystems

    Gut first

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

    By Rachel Ehrenberg
  5. 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.