1. Earth

    A dietary cost of our appetite for gold

  2. Earth

    Even low lead in kids has a high IQ cost

    Lead can damage a young child's ability to learn and reason at exposures far lower than the limit deemed acceptable by the U.S. government.

  3. Earth

    Beware bathtub wines

  4. Earth

    Sky Cycles

  5. Earth

    Big dam in China may warm Japan

    Construction of the Three Gorges Dam across the Yangtze River in China may lead to warmer temperatures in Japan, because any diversion of water for Chinese agriculture could initiate convection in the Japan Sea that brings warmer water to the surface.

  6. Earth

    Toxic runoff from plastic mulch

  7. Earth

    Lasers show atmosphere differs from models

    New observations of the middle and upper atmosphere over Earth's polar regions may require scientists to revamp their mathematical models of temperature and other environmental conditions at high altitudes.

  8. Earth

    Oops! Tougher arsenic rule retracted

    The new EPA administrator has delayed by 60 days the implementation of a final rule issued by the Clinton administration lowering the amount of arsenic allowed in drinking water.

  9. Earth

    How polluted we are

    Most people carry traces of toxic pollutiants, including metals, pesticides, and phthalates.

  10. Earth

    Microbes put ancient carbon on the menu

    Scientists have found microorganisms within Kentucky shale that are eating the ancient carbon locked within the rock, a previously unrecognized dietary habit that could have a prevalent role in the weathering and erosion of similar sedimentary rock at many other locations.

  11. Earth

    Ancient tree rings reveal past climate

    Using tree-ring analysis, an international team of researchers has reconstructed the earliest record of annual climate variation.

  12. Earth

    POPs in the butter

    Governments may be able to monitor trends in the release and transport of persistent organic pollutants by sampling butter.