News

  1. Earth

    An Ounce of Pollution: Particles’ harm varies by person, region, season

    A gram of small, air-polluting particles has deadlier effects in certain seasons and regions of the country than in others, and particulate pollutants may disrupt heart function most in people who already have cardiovascular problems.

    By Ben Harder
  2. Astronomy

    Alien Light: Extrasolar planets are detected in new way

    Two teams of scientists report that they have for the first time directly detected the glow of planets that circle sunlike stars hundreds of light-years from Earth.

    By Ron Cowen
  3. Paleontology

    Old Softy: Tyrannosaurus fossil yields flexible tissue

    Scientists analyzing fragments of a Tyrannosaurus rex's leg bone have recovered soft, pliable material, including structures that apparently are cells and blood vessels.