This spring's run-up in oil prices is hard to explain on the basis of market fundamentals. It seems to be the result of speculation in the commodity markets.

"When the United States' top energy and commerce officials arrive in China on Tuesday, they will land in the middle of a building storm over China's protectionist tactics to become the world's leader in renewable energy."

The debate over the giant climate-change and energy bill now before Congress has set off a fight between Eastern and Midwestern politicians over transmission lines and solar and wind energy. Many of the best wind sites are in the Midwest, far from the electric load in populous East Coast cities.

After many false starts, GM may be getting into position to produce a viable electric car.

"If there weren't already enough barriers to building a gas pipeline from Alaska's North Slope, the Lower 48 recently entered its biggest-ever natural gas boom."

"Oil prices briefly fell under $60 a barrel on Thursday after nearly two weeks of uninterrupted declines, as traders and investors acknowledged that a global economic recovery would take longer than hoped."

GM will emerge from bankruptcy, after a 50-billion taxpayer bailout, with the 22 mpg Camaro muscle car as its star performer.

Consumers are attracted to the "cash-for-clunkers" program that gives them several thousand dollars to trade in old gas guzzlers for more fuel-efficient cars.

"The Treasury and the Energy Department today unveiled long-awaited new rules under which the government will pay up to 30 percent of the cost of renewable energy projects."

Environmental groups say the Interior Department's effort to site solar-power projects on public lands should not harm wildlife and should be accompanies by similar efforts for other kinds of alternative energy.

T. Boone Pickens postponed a plan to create the world's largest wind farm in Texas. The billionaire had spent $60 million advertising his plan to combat what he calls the United States' addiction to foreign oil.

"A coalition of environmental groups is suing federal agencies in an effort to change the location of corridors to transmit energy across Western lands."

"The Pennsylvania Department of Environmental Protection is working to regulate salt discharges that result from natural-gas drilling."

Tough new efficiency standards haven't killed the incandescent light bulb -- but instead are spurring inventors to make better ones.

Summertime and the grilling is easy... but how environmentally friendly is it? Which type of grill is greener: gas or charcoal?