News

  1. Earth

    Really hot water

    Hot-water tanks can accumulate radioactive deposits from naturally occurring radioactive material.

    By Janet Raloff
  2. Earth

    Landscaping stones may pose risks to the environment

    Chemical analyses suggest that planting ornamental rock gardens in some cases may not be doing the environment any favors.

    By Sid Perkins
  3. Earth

    Big quakes can free grounded icebergs

    Data gathered by equipment installed on an immense iceberg off Antarctica suggest that the ground motions spawned by large, distant earthquakes can free such bergs to float again.

    By Sid Perkins
  4. Earth

    Seismic vibes gauge Earth’s crust

    New seismic observations are adding to scientists' knowledge of the thickness of Earth's crust, especially in the Southern Hemisphere.