News

  1. Anthropology

    A Seasoned Ancient State: Chinese site adds salt to civilization’s rise

    Analyses of remains from an ancient Chinese site situated along a river indicate that salt making occurred there as long as 4,000 years ago.

    By Bruce Bower
  2. Astronomy

    First Supper: X rays may mark eating habits of baby black holes

    Astronomers have evidence that just minutes after their tumultuous birth, baby black holes emit powerful burps of X rays that may be fueled by material left over from their first meal.

    By Ron Cowen
  3. Physics

    Warm Ice: Frozen water forms at room temperature

    Ultrathin films of ice observed at room temperature and ordinary atmospheric pressure should be more widespread than previously thought, according to new experiments indicating that weaker-than-expected electric fields induce such freezing.