News

  1. Astronomy

    First Family: Pluto-size body has siblings

    Astronomers have found the first family of objects in the Kuiper belt, a remote outpost of the solar system beyond the orbit of Neptune.

    By Ron Cowen
  2. Physics

    Warming Up to Criticality: Quantum change, one bubble at a time

    Physicists can now observe matter as it gradually turns into a Bose-Einstein condensate—the exotic state of matter that displays quantum behavior at macroscopic scales.

    By Davide Castelvecchi
  3. Anthropology

    Ancient Slow Growth: Fossil teeth show roots of human development

    An extended period of childhood evolved in people at least 160,000 years ago.

    By Bruce Bower
  4. Health & Medicine

    Brain Fix: Stem cells supply missing enzyme

    Brain stem cells implanted into sick mice restored a missing enzyme and extended life span by 70 percent.