"Wading into one of the hottest environmental debates in the nation, California on Tuesday released its first-ever regulations for hydraulic fracturing, or "fracking," the increasingly common -- and controversial -- practice of freeing oil and gas from rock formations by injecting chemicals under high pressure into the ground."

"The United States on Tuesday pressed forward with plans to slap steep punitive duties on wind turbine towers imported from China at prices deemed unfairly low, even as officials welcomed a high-level Chinese delegation for trade and economic talks."

"Spain's oldest nuclear plant Garona is shutting down on Sunday ahead of new taxes included in a government energy reform that would render the plant unviable."

The federal tax credit for wind energy expires December 31, unlike many subsidies for fossil fuels. Congressional inaction could doom or hobble many green entrepreneurs.

"Energy in Depth prepares 'cheat sheet' of pro-fracking talking points before release of Gus Van Sant drilling-rights drama."

"When a government deadline for new safety management programs at offshore drilling rigs and wells approached in November 2011, oil and gas industry leaders were bracing for tough scrutiny and plenty of penalties. But that scrutiny never materialized."

"SEATTLE -- More than 2,000 opponents and supporters of a plan to ship coal through a northwest Washington terminal turned out Thursday for a final public meeting on the controversial proposal."

"More than 100 physicians urged the Obama administration on Thursday not to approve the construction of liquefied natural gas export terminals until more is known about the health effects of hydraulic fracturing, the drilling process that has opened the way for a big increase in domestic gas production."

"Nuclear power giant Exelon is telling its employees to lobby Congress to end the production tax credit for wind power, which will expire at month’s end unless lawmakers vote to extend it."

"MORGANTOWN, W.Va. -- It didn't take long for the new associate professor at West Virginia University to give the state's most powerful industry a bad case of heartburn."

"Have you ever found yourself reading a news article or op-ed in which an 'expert' from a distinguished-sounding 'think tank' or 'institute' seeks to distort or attack climate change science or, alternately, decries public investment in clean energy solutions, and wonder in whose interest this individual and their organization is operating?"

"Contractors worked throughout the night to remove and replace an 800-foot swath of Interstate 77 that turned from asphalt to cinder in a massive natural gas line explosion that also flattened four homes and damaged five more but caused no deaths."

"The sale of advanced battery maker A123 to China's Wanxiang Group could recoup US taxpayer funds. But critics warn the threats to US security outweigh any benefits from the pending sale of A123."

Illinois may soon approve the mining of fracking sand near a beloved state park.

"NEVADA, Iowa -- Science and engineering company DuPont has started construction of a large cellulosic ethanol biorefinery in Iowa, with completion expected in mid-2014."