"If you’re thinking about buying a cleaner, more fuel-efficient car, you might think a hybrid is your best option. But some automakers want people to look at an older technology when they’re looking for green cars: the diesel engine."

There is a debate in Congress over the wisdom of a massive expansion of the U.S. electrical grid.

"The leases, auctioned near the end of the Bush administration, were blocked by Obama's Interior Department. Now a report opens the door to 30 of them being reissued."

"The Obama administration gave conditional support today for a federal-industry partnership that would build an advanced coal-burning power plant in Illinois to trap and store carbon dioxide emissions, reversing a Bush-era decision to abandon the FutureGen project."

"A Canadian service station today became the first in the world to sell gasoline blended with biofuel made from wheat straw."

"Biofuel and farm groups objected to the U.S. EPA's revisions to the National Renewable Fuel Standard today at a public hearing in Washington."

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.

"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."

"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."

"In the future, keeping your gas tank full could make disputes over water in the American West a lot worse. It's because energy companies hope to develop the oil shale industry. Getting oil from shale requires lots of water, and the richest oil shale deposits happen to be in the dry state of Colorado."

"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."

Jon Wellinghoff, the new chairman of FERC, will have enormous influence in a time when the United States' energy future is at a crossroads.

As bankrupt General Motors fights for survival, the company is ambivalent about trading in its love for gas-guzzling muscle cars for gas-sippers or the plug-in Chevy Volt.

"Seawater algae -- a cousin to pond scum -- may someday become a significant source of fuel for military jets and airliners...."

"Oil prices on Thursday set a new high for the year, buoyed by a weaker dollar and the first drop in unemployment since January."