"With a barrage of legal briefs, a coalition of business groups and Republican-leaning states are taking their fight against Obama administration climate change regulations to the U.S. Supreme Court."

"The Senate has unanimously confirmed President Obama's nominee to lead the Energy Department."

"The Obama administration said Thursday it will require companies that drill for oil and natural gas on federal lands to publicly disclose chemicals used in hydraulic fracturing operations. The new "fracking" rule replaces a draft proposed last year that was withdrawn amid industry complaints that federal regulation could hinder an ongoing boom in natural gas production.

"WASHINGTON — A sharply divided Senate committee on Thursday approved the nomination of Gina McCarthy to serve as administrator of the Environmental Protection Agency.

"Updated federal advice on mercury levels in fish appears to have stalled within the U.S. department of health, frustrating scientists and advocacy groups who argue that exposure to mercury may be dangerous at lower levels than previously thought."

"If U.S. EPA air chief Gina McCarthy is eventually confirmed as agency administrator, the Office of Air and Radiation will join four other agency offices that have no permanent, Senate-confirmed leaders."

"Twenty-four plaintiffs, including a dozen police officers who rushed to the scene of a November train derailment in Paulsboro, sued on Monday, alleging that the rail company's negligence caused the derailment, and that it downplayed the dangers of a chemical spill and failed to protect responders."

"After three hours of debate, the Senate Agriculture, Nutrition and Forestry Committee today voted 15-5 to send its 1,100-page, five-year farm bill to the full Senate floor."

"The head of the Senate Environment Committee on Friday rescheduled a vote on President Barack's Obama's nominee to head the Environmental Protection Agency, Gina McCarthy, and urged Republicans to stop stalling the nomination."

"Two controversial amendments related to the National Flood Insurance Program will not be taken up as part of the Water Resources Development Act, which [was] on track for a final vote [Tuesday] evening after senators reached a last-minute agreement on amendments to be considered." [The Senate did not complete work on the bill Tuesday and will resume work Wednesday.]