Scientists recommend tighter smog rules
559503
Federal scientists want to tighten smog standards, a step that would allow tens of millions of Americans to breathe easier but also would clash with President Bush's plan to wean Americans away from gasoline.
334033
Officials in Californian announce tough new regulations to stem the emission of greenhouse gases from cars.
170798
After years of stalemate, Washington decision makers are poised this year to impose new federal requirements aimed at curbing air pollution from power plants that each year cuts short the lives of 24,000 Americans.
199524
The Environmental Protection Agency said Thursday that current smog standards don't sufficiently protect public health and proposed tightening them for the first time in a decade.
410218
A new study unexpectedly found that air pollution has a minimal effect on children with asthma, but a researcher involved in the project said more work needs to be done.
270953
Exposure to even small amounts of benzene may pose a health risk, say scientists.
287914
Filters should be placed on millions of old diesel engines to protect Americans who breathe large amounts of lung-and-heart-damaging soot particles during their daily commutes, according to a clean air group.
135428
California air-quality regulators on Friday adopted the nation&#39;s first-ever rules to reduce car emissions linked to global warming, an action likely to prompt tough pollution standards in other states and a legal challenge by the
412296
Governors of 20 US states must slash levels of tiny particles spewed by power plants, cars and other sources by 2010, the Environmental Protection Agency (EPA) said on Friday.
260961
Scientists have long known that air pollution is a serious health hazard that increases the risk of premature death. But a new study may come as a shock.
162989
California air-quality regulators  on Friday adopted the nation's first-ever rules to reduce car  emissions linked to global warming, an action likely to prompt  tough pollution standards in other states and a legal challenge  by the auto industry.
367953
By Spencer Hunt, The Columbus Dispatch, Ohio  Jun. 22--A federal plan to cut smog nationwide could mean costlier gasoline and electricity.   The U.S. Environmental Protection Agency yesterday proposed a reduction of 6 percent to 12.5 percent in ozone, a key ingredient of smog.
374427
Today's tools could cap emissions that contribute to global warming, study finds.
354382
Politicians in the nation's capital have been reluctant to set limits on the carbon dioxide pollution that is expected to warm the planet by 4 to 7 degrees Fahrenheit during the next century, citing uncertainty about the severity of the threat. But that uncertainty may have shrunk somewhat with the release last week of two scientific reports suggesting that global warming is not just a hypothetical possibility, but a real phenomenon that has already started transforming especially sensitive parts of the globe.
412951
WASHINGTON -- Breathing easier without limiting activities is the goal of new government guidelines that urge more attention to asthma sufferers' day-to-day symptoms, not just their severe attacks.
414051
Climate scientists tell a conference that greater efforts should be made to pull CO2 from the atmosphere.
558138
By Ian Hoffman, STAFF WRITER  SACRAMENTO -- Scientists say bits of air pollution as small as a thousandth of a hair's width appear to be reducing rain and snowfall in the Sierra, Cascades and Rockies, potentially adding to threats of water shortages tied to global warming.