"A coalition of seven eastern states led by New York plans to sue the U.S. Environmental Protection Agency for failing to issue new guidelines to curb methane emissions, a greenhouse gas that may be linked to climate change."

"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."

"A blue-ribbon panel of scientific and technology advisers to President Obama warns that the nation risks losing its longstanding supremacy in food production because research in agriculture has not kept up with new challenges like climate change, depleted land and water resources and emerging pests, pathogens and invasive plants."

Chevron has subpoenaed one of its shareholders, a sutainable investment firm that has sponsored numerous stockholder proposals over the years, for records that include the firm's conversations with the news media.

"LOS ANGELES -- A federal board Friday ordered the operator of a shuttered nuclear power plant in California to turn over dozens of pages of documents that were withheld when the company submitted a plan to restart one of its damaged twin reactors."

"Federal officials have given energy and mining companies permission to pollute aquifers in more than 1,500 places across the country, releasing toxic material into underground reservoirs that help supply more than half of the nation's drinking water. In many cases, the Environmental Protection Agency has granted these so-called aquifer exemptions in Western states now stricken by drought and increasingly desperate for water."

"ATLANTA -- If disaster strikes a nuclear power plant in the U.S., the utility industry wants the ability to fly in heavy-duty equipment that could avert a meltdown."

"The federal government has come up with dozens of ways to enhance the diminishing flow of the Colorado River, which has long struggled to keep seven states and roughly 25 million people hydrated."

"After two federal judges recused themselves from a criminal case against former BP PLC managers indicted for their role in the Deepwater Horizon disaster, a third has made disclosures of his own."