News

  1. Earth

    Ice-dammed lakes had cooling effect

    New computer simulations suggest that massive lakes in northern Russia—formed when an ice sheet blocked the northward flow of rivers about 90,000 years ago—significantly cooled the region's climate in summer months.

    By Sid Perkins
  2. Humans

    Better protection from mad cow disease

    The Food and Drug Administration has announced several new measures to keep meat that's potentially infected with mad cow disease out of food supplies.

    By Janet Raloff
  3. Health & Medicine

    Surgery removes grenade from soldier’s head

    Colombian military doctors extracted an intact grenade from the head of a teenage soldier.

    By Ben Harder
  4. Humans

    The Chosen: A New Crop of Scientific Minds; Student science competition announces finalists

    Forty high school students from 14 states and the District of Columbia have been selected to compete for the top prizes in the 2004 Intel Science Talent Search.