News

  1. Astronomy

    Rocky Finding: Evidence of extrasolar asteroid belt

    Astronomers have obtained some of the best evidence yet for an asteroid belt beyond the solar system.

    By Ron Cowen
  2. Health & Medicine

    Better Blood: New tool removes agent of brain disease

    Scientists have developed a device that filters from blood the mutant proteins that cause the human form of mad cow disease, an advance that may hold promise for increasing the safety of donated blood.

    By Christen Brownlee
  3. Paleontology

    Paleotrickery: A lengthy lineage for leaf-mimicking insects

    Species in one group of insects have escaped the hungry eye of predators by looking like foliage and moving like swaying leaves for at least 47 million years, a new fossil find suggests.