"A Coast Guard admiral who led the government's response to the Deepwater Horizon disaster is taking over as the nation's chief overseer of offshore drilling safety, the Obama administration said Monday. Rear Adm. James Watson begins his post as director of the Interior Department's Bureau of Safety and Environmental Enforcement on Dec. 1."

The bankruptcy of the solar firm Solyndra has focused a lot of attention -- some of it politicized -- on clean-energy subsidies. While those subsidies have sparked something of a "gold rush" among clean-energy entrepreneurs, some clean-energy startups face serious economic challenges that may justify them.

"Nebraska and TransCanada Corp reached a deal on Monday that will see the state pay for environmental studies on a new route for the $7 billion Keystone XL pipeline that steers clear of the environmentally sensitive Sand Hills region and the Ogallala aquifer."

"The leading American effort to capture carbon dioxide from coal plants has hit a stumbling block that could imperil the project and set back a promising technology for addressing global warming, people involved in the venture said. "

"The Obama administration, under sharp pressure from officials in Nebraska and restive environmental activists, announced Thursday that it would review the route of the disputed Keystone XL oil pipeline, effectively delaying any decision about its fate until after the 2012 election."

"The State Department is considering a plan that would reroute the proposed Keystone XL oil pipeline from Canada away from environmentally sensitive areas of Nebraska, an action that could delay a final decision on the project until after the 2012 election."

"HONG KONG — The United States and China are gearing up for a trade war that could catch American users of solar energy in the crossfire."

"Long-awaited revisions to the Delaware River Basin Commission's proposed rules that would govern natural-gas development in the watershed were released Tuesday."