The Environmental Protection Agency will miss an end-of-month target for proposing greenhouse gas regulations for power plants, the head of the EPA said on Wednesday.

California plans to get a third of its electricity from wind, solar and other renewable energy, but Governor "Moonbeam" Jerry Brown wants more.

They've banned gay marriage and are poised to blow off a chance to legalize marijuana, but California voters are remaining true to one stereotype -- their commitment to the environment.

A measure to suspend the state's vanguard climate change law is heading for failure, by a margin of 49 percent to 37 percent, because voters see the law doing more economic good than harm, a Reuters/Ipsos poll r

Two U.S. spacecraft were crashed into a lunar crater on Friday but scientists said it was too early to say whether the mission to search for supplies of water on the Moon had been a success.

NASA, which is hoping to find sufficient quantities of water to use as fuel for space exploration, said it could take two months to make a conclusive assessment of what was found.

As makers from Tesla to Nissan Motor Co (7201.T) jockey to dominate the next generation electric-powered cars, a fight on which companies will control the lucrative market to fuel them is just getting started.

U.S. President Barack Obama aims to put a million electric vehicles on the road by 2015 as part of the new U.S. effort to cut greenhouse gas emissions linked to global warming.

As makers from Tesla to Nissan Motor Co jockey to dominate the next generation electric-powered cars, a fight on which companies will control the lucrative market to fuel them is just getting started.

U.S. President Barack Obama aims to put a million electric vehicles on the road by 2015 as part of the new U.S. effort to cut greenhouse gas emissions linked to global warming.

Maybe the future of climate friendly energy won't have as much to do with wind and solar energy as current booms in those technologies suggest.

Clouds and calm days could make the alternative energy stars bit players in a clean power future where round-the-clock dependability is critical.

Climate change may cost California tens of billions of dollars annually in coming years as sea levels rise and hot days cause people to turn up the air conditioning, a draft report from the state said on Wednesday.

The long-awaited "smart grid" for U.S. power could play a major role in rolling out renewable energy like wind and solar, the top U.S. power regulator said on Wednesday.

California Governor Arnold Schwarzenegger is ready to put his star power to work for President Barack Obama on the environment when his own term ends next year, the former movie actor said on Thursday.