"WASHINGTON -- Only blocks away, the Energy Department manages the search for quarks and NASA scours the heavens for Earth-like planets. But inside a big white tent on the National Mall, the focus is on something simpler: oak, ash and elm, and how to make them heat a house with as little pollution as possible."

"Hydrogen fuel cars will be offered by Hyundai, Honda, and Toyota, starting as early as next spring. Hydrogen fuel cars cause no air pollution and can be refueled like gasoline-powered cars, but fueling stations are scarce."

"WASHINGTON -- The House approved a bill Wednesday aimed at speeding up drilling for oil and natural gas."

"Chevron, Exxon and BP among companies most responsible for climate change since dawn of industrial age, figures show"

"Biofuels producers and their political allies are ramping up public and behind-the-scenes pressure on the Environmental Protection Agency to rethink its plan to scale back the national biofuels blending mandate."

"Shell plans to drill five wells over several years at its Burger prospect in the Chukchi Sea, according to a revised exploration plan filed Nov. 6 and posted online by the U.S. Bureau of Ocean Energy Management."

"A Russian medic and a freelance journalist who were among 30 people arrested for a Greenpeace protest against offshore Arctic drilling were granted bail on Monday in a case that has drawn fierce criticism abroad."

"FREDERICTON, Canada -- A judge ruled here Monday against an injunction to suspend controversial shale gas exploration activities in Kent County, New Brunswick, which last month created headlines across North America when protests in the area turned violent as activists burned police cars amid dozens of arrests."

"State health officials rolled out groundbreaking rules for the oil and gas industry Monday to address worsening air pollution, including a requirement that companies control emissions of the greenhouse gas methane, linked to climate change."