News

  1. Earth

    Diabetes from a Plastic? Estrogen mimic provokes insulin resistance

    Exposure to trace amounts of an estrogenlike ingredient of polycarbonate plastic may increase the risk of diabetes, experiments in mice show.

    By Ben Harder

  2. Dieting to Save a Species: Mother parrots that eat less avoid excess of sons

    New Zealand's endangered, flightless parrot population is recovering from a shortage of daughters now that conservationists are counting calories for the mothers.

    By Susan Milius
  3. Astronomy

    Cosmic Push: Finding pieces of a dark puzzle

    A controversial new study, the first to use gamma-ray bursts to measure the expansion of the universe far back in time, hints that dark energy may not be constant in time.