"SAN BRUNO, Calif. -- State regulators have uncovered evidence that suggests Pacific Gas and Electric Co. installed 'salvaged or junked transmission pipe' on its natural-gas system in the 1940s and '50s, raising fears that a problem like the one that caused the San Bruno disaster could be lurking undetected, officials said in a regulatory filing Wednesday.

"Seven American makers of solar panels filed a broad trade case in Washington against the Chinese solar industry on Wednesday, accusing it of using billions of dollars in government subsidies to help gain sales in the American market.

The companies also accused China of dumping solar panels in the United States for less than it costs to manufacture and ship them.

"As exploratory oil drilling is set to begin in December off the coast of Cuba, the U.S. government acknowledged Tuesday that because of chilly diplomatic relations it could have a limited ability to control the response to an oil spill there, let alone one the magnitude of last year's Deepwater Horizon disaster in the Gulf of Mexico."

"The U.S. Senate unanimously passed a pipeline safety bill late Monday after a senator with strong Tea Party ties did an about-face - lifting a hold that had blocked the legislation for weeks and adding a provision that would close a regulatory loophole that drew widespread attention after the San Bruno disaster."

"The bill boosts the federal government's regulatory enforcement powers, calls for automatic shutoff valves for new pipelines and, thanks to last-minute language, ends an exemption from rigorous safety inspections for older natural-gas pipelines.

"What a difference a year makes. In late 2010, solar panel makers were sold out, Germany was gobbling up record numbers of the clean energy systems, and new markets were steadily growing."

EPA has charged a Maryland man with fraud in an alleged biofuels credit scheme, signalling a federal crackdown on fraud and abuse of the Renewable Fuels Standard.

"BP will be allowed to participate in an upcoming U.S. offshore oil and gas lease sale despite its role in the largest offshore oil spill in U.S. history, a top government regulator said on Thursday."

"America must stop promoting the production of biofuels if there is to be any real progress in addressing spiking global food prices and famine, such as seen in the Horn of Africa, an authoritative thinktank has warned."