A new map shows nearly 65,000 inactive mines--but many more are out there, posing environmental hazards.
Nobody walks in Los Angeles, and that means lots of cars, lots of exhaust, and a big smoggy sky. Where does L.A. rank among the globe's smog centers?
One spectacular toxic mine waste leak in Colorado is just the tip of the proverbial iceberg. Continue reading →
Pollution is getting into one of America's great natural wonders. Continue reading →
Government limits are far too low on a chemical used in making non-stick cookware, a new study suggests. Continue reading →
While the radioactivity is low, the element's chemical properties pose a health risk.
The sun triggers the release of smog-forming nitrogen oxide compounds from urban grime. Continue reading →
Nearly 40 percent of people in China are regularly exposed to air that would be considered unhealthy by American and European standards. Continue reading →
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