Earth
- 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.
- 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.
- Earth
Crater in the sand
Researchers analyzing satellite images of the Sahara Desert have discovered the region's largest impact crater.
- 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.
- 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.
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- 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.
- 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.
- Earth
Finding dirty diesels
Just a few diesel-fueled vehicles account for much of traffic-related soot.
- 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.
- 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.
- 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.
