News

  1. Astronomy

    Cosmic Triumph: Satellite confirms birth theory of universe

    The most detailed portrait ever taken of the radiation left over from the Big Bang provides fresh evidence that the universe began with a tremendous growth spurt, expanding from subatomic scales to the size of a grapefruit in less than a trillionth of a second.

    By Ron Cowen
  2. Earth

    Manufacturers agree to phase out nonstick chemical

    Complying with a request from the Environmental Protection Agency, the companies that make the likely carcinogen perfluorooctanoic acid (PFOA) have agreed to phase out its release worldwide by 2015.

    By Ben Harder
  3. Anthropology

    Evolution persisted in agricultural era

    Natural selection has continued to propagate survival-enhancing gene variants in human populations over the past 10,000 years, according to a new genetic analysis.