News

  1. Astronomy

    Double disks

    Astronomers have confirmed that the nearby star Beta Pictoris has two disks of dust orbiting it, each of which is generated by debris likely to be left over from planet formation.

    By Ron Cowen
  2. Tech

    Litmus test gets tiny

    When zapped by a laser, new, light-sensitive nanobaubles could provide a reading of pH, or how acidic or basic a solution is, even from deep inside living cells.

    By Peter Weiss
  3. Health & Medicine

    Obesity correlates with psychiatric disorders

    Obese adults are 25 percent more likely than normal-weight adults to develop one of four mood or anxiety disorders.

    By Eric Jaffe
  4. Paleontology

    Rarity of fossils of young tyrannosaurs explained

    Paleontologists have unearthed only a few juvenile tyrannosaurs, and a new study suggests why: A large percentage of these meat-eating dinosaurs, unlike many other creatures, survived into adulthood.