Earth

  1. Earth

    Manufacturers agree to phase out nonstick chemical

    Complying with a request from the Environmental Protection Agency, the companies that make the likely carcinogen perfluorooctanoic acid (PFOA) have agreed to phase out its release worldwide by 2015.

    By
  2. Earth

    Vesuvius’ Shadow: A major volcanic blast could threaten Naples

    When Italy's Mount Vesuvius begins to rumble again, nearby Naples may be in danger.

    By
  3. Earth

    Crater in the sand

    Researchers analyzing satellite images of the Sahara Desert have discovered the region's largest impact crater.

    By
  4. Earth

    Smoldered-Earth Policy: Created by ancient Amazonian natives, fertile, dark soils retain abundant carbon

    Amazonian dark earth, or terra preta in Portuguese, is attracting scientific attention for its high productivity, mysterious past, and ability to store carbon.

    By
  5. Earth

    China’s deserts expand with population growth

    Carried forward by winds and sandstorms, the dunes of northern China are expanding at an unprecedented rate, primarily because of human activities that have contributed to erosion.

    By
  6. Earth

    Closed pores mean more fresh water

    Less plant sweat means more river flow.

    By
  7. Earth

    Rome at Risk: Seismic shaking could be long and destructive

    If a large earthquake struck Rome, ground motions could rock the city for up to a minute, threatening many of the city's ancient landmarks.

    By
  8. Earth

    Species-aid budget looks fishy

    State and federal governments spent $1.4 billion in 2004 on conserving endangered and threatened species, with one-third of that sum going to protect fish.

    By
  9. Earth

    Finding dirty diesels

    Just a few diesel-fueled vehicles account for much of traffic-related soot.

    By
  10. Earth

    Krakatoa stifled sea level rise for decades

    Ocean cooling caused by the volcanic eruption of Krakatoa in 1883 kept sea level worldwide in check well into the 20th century.

    By
  11. Earth

    How to rate a snowstorm

    Scientists have developed a rating scale to assess the impact of major snowstorms that strike the northeastern United States.

    By
  12. Earth

    Global warming may already be a killer

    Earth's rising temperatures may be a precipitating factor in the extinctions of dozens of tropical frog species.

    By