Sep 24 - By Samantha Young, Associated Press Writer
Despite industry objections and threats of lawsuits, California air regulators on Friday approved the nation's first statewide carbon fee on utilities, oil refineries and other polluting industries.
Feb 26 - By Samantha Young, Associated Press Writer
California air regulators on Thursday broadened their reach into Silicon Valley, implementing rules intended to cut greenhouse gas emissions from semiconductor plants.
Jan 26 - By The Associated Press
President Barack Obama took two steps Monday to launch what he called a "steady, focused, pragmatic" pursuit of energy independence:

Jan 26 - By Randolph E. Schmid, AP Science Writer
Many damaging effects of climate change are already basically irreversible, researchers declared Monday, warning that even if carbon emissions can somehow be halted temperatures around the globe will remain high until at least the year 3000.

Jan 25 - By Ben Feller, Associated Press Writers
President Barack Obama opened an ambitious, double-barreled assault on global warming and U.S. energy woes Monday, moving quickly toward rules requiring cleaner-running cars that guzzle less gas — a must, he said, for "our security, our economy and our planet."
Jan 22 - By Samantha Young, Associated Press Writer
Gov. Arnold Schwarzenegger isn't waiting to press the Obama administration on one of California's top priorities — regulating greenhouse gas emissions from automobiles.

Dec 11 - By Samantha Young, Associated Press Writer
California on Thursday adopted the nation's most sweeping plan to cut greenhouse gas emissions, issuing rules that could transform everything from the way factories operate to the appliances people buy and the fuel they put in their cars.

Oct 24 - By Seth Borenstein, AP Science Writer
Carbon dioxide isn't the only greenhouse gas that worries climate scientists. Airborne levels of two other potent gases — one from ancient plants, the other from flat-panel screen technology — are on the rise, too. And that's got scientists concerned about accelerated global warming.
Oct 16 - By Jan M. Olsen, Associated Press Writer
The European Union's 15 original member nations are on target to meet Kyoto treaty commitments to cut greenhouse gas emissions, the bloc's environment agency said Thursday.
Sep 30 - By Steve Lawrence, Associated Press Writer
Gov. Arnold Schwarzenegger signed legislation Tuesday that attempts to ease greenhouse gas emissions by giving priority to transportation projects that limit commutes and curb urban sprawl.
Sep 17 - By Samantha Young, Associated Press Writer
Efforts to reduce greenhouse gas emissions over the next 12 years ultimately will benefit California's economy and save its residents money, according to a report released Wednesday by state air regulators.
Jun 20 - By Erica Werner, Associated Press Writer
President Bush asserted executive privilege Friday to withhold documents from a congressional investigation into whether he pressured the Environmental Protection Agency to weaken decisions on smog and greenhouse gases.
May 13 - By Associated Press
Officials say Norway's greenhouse gas emissions rose nearly 3 percent to record levels last year.
Apr 2 - By Associated Press
Officials of 18 states are taking the EPA back to court to try to force it to comply with a Supreme Court ruling that rebuked the Bush administration for inaction on global warming.
Mar 13 - By Erica Werner, Associated Press Writer
A House committee chairman issued a subpoena Thursday to force the Environmental Protection Agency to turn over 196 internal documents about its decision to deny California permission to regulate greenhouse gas emissions from cars and trucks.
Feb 27 - By Erica Werner, Associated Press Writer
The head of the Environmental Protection Agency refused to say Wednesday whether the White House sought to influence his decision denying California a waiver needed to implement a tailpipe emissions-reduction law.
Feb 26 - By Associated Press
Some high-ranking career staffers concerned about the reputation of the Environmental Protection Agency believed that Administrator Stephen Johnson would have to consider resigning if he turned down California's request to reduce vehicle greenhouse gas emissions, newly released documents show.

Jan 24 - By Erica Werner, Associated Press Writer
The Bush administration's top environmental regulator faced off Thursday against Democratic senators who took turns denouncing him for blocking tailpipe emission cuts in California and more than a dozen other states.
Jan 18 - By Samantha Young, Associated Press Writer
Invoking executive privilege, the Environmental Protection Agency on Friday refused to provide lawmakers with a full explanation of why it rejected California's greenhouse gas regulations.
Jan 10 - By Noaki Schwartz, Associated Press Writer
A panel of outraged state and environmental leaders met Thursday to examine why the federal government won't let California and 16 other states regulate emissions from cars, trucks and SUVs.
Jan 2 - By Samantha Young, Associated Press Writer
California sued the federal government Wednesday in its ongoing bid to set the country's first greenhouse gas limits on cars, trucks and SUVs, providing new data to show its program is superior to a federal plan.
Dec 21 - By Ken Thomas , Associated Press Writer
House Speaker Nancy Pelosi told the Environmental Protection Agency on Friday that Congress would closely scrutinize its decision to reject California's request to tighten rules on greenhouse gas emissions.

Dec 19 - By Ken Thomas , Associated Press Writer
The Environmental Protection Agency on Wednesday slapped down California's bid for first-in-the-nation greenhouse gas limits on cars, trucks and SUVs, refusing the state a waiver that would have allowed those restrictions to take effect.
Aug 28 - By Randolph E. Schmid, AP Science Writer
"We have met the enemy, and he is us," the comic-strip character Pogo said decades ago. A new analysis of last year's near-record temperatures in the United States suggests he was right.

Apr 2 - By Mark Sherman, Associated Press Writer
The Supreme Court rebuked the Bush administration Monday for its inaction on global warming in a decision that could lead to more fuel-efficient cars as early as next year. The court, in a 5-4 ruling in its first case on climate change, declared that carbon dioxide and other greenhouse gases are air pollutants under the Clean Air Act.