News

  1. Anthropology

    Lucy on the ground with knuckles

    Some early human ancestors appear to have walked on all fours using their knuckles, much as chimpanzees do.

    By Bruce Bower
  2. Planetary Science

    Rocks on the ice

    Pristine fragments of a meteorite that fell January 18 in the frozen Yukon and that remained frozen until they were delivered to a NASA laboratory may reveal much about the earliest days of the solar system.

    By Ron Cowen
  3. Astronomy

    Black holes and their galaxies: A closer link

    Supermassive black holes and the galaxies they inhabit appear to grow up together.

    By Ron Cowen
  4. Health & Medicine

    From rabies virus to anti-HIV vaccine

    Researchers working with mice are trying to fashion an HIV vaccine by using a weakened rabies virus to bring an HIV glycoprotein to the attention of the immune system.