News

  1. Physics

    Light’s Hidden Holdup: Reflected laser beams loiter a little

    Using an ultrashort pulse laser, physicists have measured a minuscule time delay that affects light reflecting off many surfaces.

    By Peter Weiss
  2. Health & Medicine

    Vitamin E Loses Luster: Nutrient tests show disappointing results

    In people who have a history of heart disease or diabetes, vitamin E supplements don't improve overall health and might even boost heart-failure risk.

    By Nathan Seppa
  3. Humans

    Student Scientists to Watch: With diverse ideas, young talents win big in annual competition

    With science projects by 40 of the nation's brightest high school students arrayed before them last week, judges had the task of weighing the merits of undertakings as diverse as the study of deep-sea volcanism and the development of a promising new antibiotic.