"OLYMPIA, Wash. -- Nearly 25 years after the Exxon Valdez oil spill off the southern coast of Alaska, sea otters in the most affected parts of Prince William Sound have recovered to their pre-spill numbers, a federal report released on Friday showed."

"RALEIGH, N.C. — Last June, state employees in charge of stopping water pollution were given updated marching orders on behalf of North Carolina’s new Republican governor and conservative lawmakers."

"WASHINGTON -- As the years-long fight over the Keystone XL pipeline grinds toward resolution, green groups are broadening their focus to include the possibility that the Obama administration will loosen curbs on how much oil and gas the United States exports."

"Faith Spotted Eagle figures that building a crude oil pipeline from Canada to the U.S. Gulf Coast would bring little to Indian Country besides more crime and dirty water, but she doubts that Native Americans will ever be able to get the U.S. government to block the $7 billion project."

"North Carolina regulators have cited five more Duke Energy power plants for lacking required storm water permits after a massive spill at one of the company’s coal ash dumps coated 70 miles of the Dan River in toxic sludge."

"The state department of environment and natural resources announced Monday that Charlotte-based Duke had been issued formal notices of violation for not having the needed permits, which are required to legally discharge rainwater draining from its plants into public waterways.

"TRAVERSE CITY, Mich. — A freshwater channel that separates Michigan's upper and lower peninsulas is a premier Midwestern tourist attraction and a photographer's delight, offering spectacular vistas of two Great Lakes, several islands and one of the world's longest suspension bridges. But nowadays the Straits of Mackinac is drawing attention for something that is out of sight and usually out of mind, and which some consider a symbol of the dangers lurking in the nation's sprawling web of buried oil and natural gas pipelines."

"The Energy Department today rolled out new energy efficiency standards to make commercial refrigeration equipment in grocery and convenience stores about 30 percent more efficient -- providing another bump for President Obama's Climate Action Plan."

"A surge in US oil and natural gas production has lifted hopes about North American energy security, but that growth will plateau and will be difficult to replicate elsewhere, says Maria van der Hoeven, chief executive of the International Energy Agency, in an interview with the Monitor."

WASHINGTON — Despite rising anxiety over the possibility of a cyberattack on the power grid, the industry and government are not set up well to counter the threat, according to a report produced by leading energy security experts. Companies are reluctant to share information with one other, a critical step in reducing vulnerability, because they are afraid of being accused of failing to comply with cybersecurity rules, committing antitrust violations or giving away proprietary information, the report found."

"WASHINGTON, DC -- Police arrested more than 370 young people who tied themselves to the White House fence on Sunday to protest the proposed Keystone XL tar sands oil pipeline."