News

  1. Space

    Panel says planned NASA rocket won’t do the job

    The Ares 1 set to replace the space shuttle is too expensive and won’t be ready soon enough, the Augustine Committee concludes.

    By Ron Cowen
  2. Animals

    Ancient giant beavers did not chow on trees

    The now-extinct animals had a hippo-like diet

    By Sid Perkins
  3. Chemistry

    How leaves could monitor pollution

    Trees near high-traffic areas accumulate tiny particles.

    By Sid Perkins
  4. Life

    Estrogen helps ward off belly fat

    Hormone is one reason that men and women carry weight differently

    By Lisa Grossman
  5. Life

    Fossil find sparks debate on primate origins

    A 37-million-year-old jaw suggests the famous fossil Darwinius does not, as had been suggested, fill a gap in human evolution.