News

  1. Humans

    When budgeting for quakes, dig deep

    If earthquakes that struck the United States since 1900 are any guide, the nation can expect to suffer seismic damages of about $2.5 billion dollars each year in the future.

    By Sid Perkins
  2. Earth

    Scraping the bottom

    A survey of deep waters in western Lake Superior has revealed the tracks left by massive icebergs scraping bottom there during the last ice age.

    By Sid Perkins
  3. Earth

    Glaciers give major boost to sea level

    The ongoing disappearance of glaciers and other small ice masses worldwide makes a larger contribution to sea level rise than the melting of ice sheets on Greenland and Antarctica does.