Nov 23 - By Eliane Engeler, Associated Press Writer
Greenhouse gases in the Earth's atmosphere reached record highs in 2008, with carbon dioxide levels increasing faster than previously, the U.N. weather agency said Monday.
Nov 10 - By Carla K. Johnson, AP Medical Writer
Health care, a giant in the U.S. economy, may be a gentle giant when it comes to greenhouse gases.

Oct 5 - By Dina Cappiello, Associated Press Writer
President Barack Obama wants the federal government to set the example when it comes to global warming.

Sep 30 - By Dina Cappiello, Associated Press Writer
Proposed regulations would require power plants, factories and refineries to reduce greenhouse gases by installing the best available technology and improving energy efficiency whenever a facility is significantly changed or built.
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.

Jun 25 - By Samantha Young, Associated Press Writer
California regulators on Thursday delayed a decision on whether to implement the nation's first statewide carbon fee on utilities, oil refineries and other polluting industries.
Jun 18 - By Associated Press
How are those greenhouse gases doing?
Apr 15 - By Victor Epstein, Associated Press Writer
Organizers and participants in the nation's only working cap-and-trade program for carbon emissions called the fledgling attempt to reduce greenhouse gas emissions a success Wednesday.
Mar 10 - By Dina Cappiello, Associated Press Writer
The federal government wants to require companies for the first time to disclose the amount of greenhouse gases they're releasing into the atmosphere.
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 27 - By Samantha Young, Associated Press Writer
California was handed a big environmental victory when President Barack Obama endorsed a key part of the state's greenhouse gas reduction plan.

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."
Dec 11 - By The Associated Press
California air regulators Thursday adopted a plan to cut the state's greenhouse gas emissions over the next 12 years. Some of the strategies in the plan:
Nov 25 - By Eliane Engeler, Associated Press Writer
Greenhouse gases in the Earth's atmosphere have reached new record highs and show no sign of leveling off, the U.N. weather agency said Tuesday.
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.
Aug 30 - By Don Thompson, Associated Press Writer
For decades, California cities and counties knew one way to grow — by sprawling outward.

Jul 31 - By Samantha Young, Associated Press Writer
The Los Angeles Department of Water and Power has a storied place in California history.

Jul 24 - By Brad Cain, Associated Press Writer
Seven Western states are joining four Canadian provinces to propose a plan to limit greenhouse gas emissions through use of a "cap and trade" system.
Jun 25 - By Erica Werner, Associated Press Writer
A high-ranking political appointee resigned from the Environmental Protection Agency after concluding there was no more progress to be made on greenhouse gases under the Bush administration.
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.
Apr 23 - By Randolph E. Schmid, AP Science Writer
Major greenhouse gases in the air are accumulating faster than in the past despite efforts to curtail their growth.
Apr 9 - By Erica Werner, Associated Press Writer
A House committee chairman issued a subpoena Wednesday seeking records of contacts between the White House and Environmental Protection Agency officials concerning California's tailpipe emissions law.
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 10 - By Erica Werner, Associated Press Writer
A House committee chairman on Monday accused the Environmental Protection Agency of withholding hundreds of communications about its refusal to let California regulate greenhouse gas emissions from cars and trucks.
Feb 29 - By Erica Werner, Associated Press Writer
The Environmental Protection Agency on Friday justified blocking California from cracking down on auto emissions by saying global warming isn't unique to the state.