News

  1. Earth

    Lawn Agent Cues Embryo Shortfall: Herbicide weeds out mice in the womb

    Minuscule amounts of over-the-counter weed killers impair reproduction in mice.

    By John Pickrell
  2. Astronomy

    Hefty Discovery: Finding a Kuiper belt king

    A newly discovered celestial body appears to be the largest object that scientists have found in the solar system since their detection of Pluto in 1930.

    By Ron Cowen
  3. Humans

    Physics for Sale: Collectors snap up pricey historical materials

    Documents detailing the rise of modern physics and Albert Einstein's development of the general theory of relativity have sold at an auction for nearly $1.8 million.

    By Jessica Gorman
  4. Health & Medicine

    Attention Loss: ADHD may lower volume of brain

    Brain-scan data show that the brains of children diagnosed with attention-deficit hyperactivity disorder are slightly smaller than those of their peers who are free of psychiatric disorders.