News

  1. Life

    In one lake deep under Antarctica’s ice, microbes feast on ancient carbon

    Microorganisms living in a lake beneath the ice sheet in West Antarctica feed on ocean carbon that was deposited 6,000 years ago.

    By Freda Kreier
  2. Astronomy

    A reappearing supernova offers a new measure of the universe’s expansion

    Supernova Refsdal blew up once but burst into view at least five times. The timing of its appearances provides clues to how fast the universe is growing.

    By James R. Riordon
  3. Paleontology

    ‘Thunder beast’ fossils show how some mammals might have gotten big

    Rhinolike mammals called brontotheres repeatedly evolved into bigger and smaller species, a fossil analysis shows.