"Google Inc is closing in on its goal of producing renewable energy at a price cheaper than coal, the company's so-called green energy czar, the engineer in charge of the project, said on Tuesday."

"A U.S. clean-energy boom could force the nation to shed its addiction to foreign oil, only to develop a dependence on imported minerals and metals."

"Some of the world's largest airlines called on Tuesday for the industry to set global emissions targets as part of efforts to include aviation in a broader climate agreement at the end of the year."

"The Army Corps of Engineers is on a mission to chop down every tree in the country that grows within 15 feet of a levee — including oaks and sycamores in Louisiana, willows in Oklahoma and cottonwoods in California."

The House passed a bill that would give some $4 billion in vouchers to owners of gas-guzzlers who trade them in for more efficient cars. It would boost car sales.

Witnesses at a Senate Hearing testified about many ways in which the world's oceans are already being affected by global warming.

"Canada plans to expand one of its most prized parks to more than six times its current size in a move to help protect the habitats of grizzly bears, caribou and other species...."

"The Senate Energy and Natural Resources Committee approved expanded oil and gas leasing today in the eastern Gulf of Mexico in a bipartisan vote that would upend a 2006 compromise with Florida senators that provided their state at least a 125-mile buffer in most areas until mid-2022."

"U.S. Environmental Protection Agency Administrator Lisa Jackson at a Senate hearing Tuesday outlined several changes to the agency's scientific review and assessment processes that reverse protocols enforced during the Bush administration."