"The National Oil Spill Commission continues its investigation into the Deepwater Horizon explosion and spill, but the president's panel remains hampered by its inability to compel key witnesses to testify and turn over documents. Senate Republicans blocked a bill to grant the commission subpoena power in July. Now the Senate has gone home once without moving the measure forward."

"The Federal Communications Commission has changed its guidance to cellphone users worried about the health effects of wireless devices, dropping a long-standing recommendation that concerned consumers purchase phones with lower levels of radiation emissions."

"The Environmental Protection Agency wants to regulate a toxic chemical used in rocket fuel that has contaminated drinking water supplies, reversing a decision made under the Bush administration."

"Senior financiers and the leaders of powerful energy companies on Thursday blamed subsidies to oil and natural gas  companies for damaging the ability of the clean-energy industry to recover from the economic slowdown and take advantage of growing power markets worldwide."

"BP has agreed to pay a record $15 million fine to the federal government for air pollution violations at its troubled Texas City refinery."

"University researchers said on Thursday they recently found alarming levels of cancer-causing toxins in an area of the Gulf of Mexico affected by BP's oil spill, raising the specter of long-lasting health concerns."

"Mid-Ohio Valley teenagers who were exposed to DuPont Co.'s C8 pollution experienced a four- to six-month delay in puberty, according to a new study that adds to the growing concerns about potential health effects of chemicals that have been widely used in nonstick and stain-resistant products."

"Backers of bipartisan Senate legislation establishing a renewable electricity standard hit a stumbling block [Thursday] as Sen. Lindsey Graham made plans to introduce an alternative energy measure that could draw Republican supporters."

"The Obama administration was set to release its latest set of requirements for offshore oil drillers by Thursday as the government moves toward lifting its contested ban on deepwater drilling in the Gulf of Mexico."

"After an eighth victim dies from the Sept. 9 San Bruno, Calif., explosion, senators introduce another bill that would require remote and automatic shut-off capability. The industry urges regulatory caution."