Uncategorized

  1. Earth

    When Genes Escape

    The focus of the debate over transgenic crops has changed from whether genes will escape to what difference it will make when they do.

    By Susan Milius
  2. Earth

    Scrutinized chemicals linger in atmosphere

    The newly determined longevity in the atmosphere of certain perfluorinated chemicals indicates that they may disperse environmental contamination far and wide.

    By Ben Harder
  3. Physics

    Cassini confirms Einstein’s theory

    En route to a 2004 rendezvous with Saturn, the Cassini spacecraft has verified a key prediction of Einstein’s theory of general relativity to an accuracy 50 times better than that of previous measurements.

    By Ron Cowen
  4. Health & Medicine

    Was President Taft cognitively impaired?

    President William Howard Taft apparently had sleep apnea, a breathing disorder that could explain his propensity to nod off.