News tagged with heart attack

Why are aspen dying?

( —If Utah's quaking aspen appear to be quaking more than usual this summer, the trees have reason to tremble, says a Brigham Young University biologist. In dappled forests across the West, aspen trees are battling ...

dateJul 01, 2013 in Ecology
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US to require lower-sulfur gasoline

The Obama administration is expected to propose new rules Friday that would slash the amount of sulfur in gasoline, one of the most significant steps the administration can take this term toward cutting air pollution, said ...

dateMar 29, 2013 in Environment
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US tightens standards for soot pollution (Update)

(AP)—The Obama administration on Friday imposed a new air quality standard that reduces by 20 percent the maximum amount of soot released into the air from smokestacks, diesel trucks and other sources of pollution in its ...

dateDec 14, 2012 in Environment
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