"MIAMI - Thousands of fans turned out on Saturday for the first Formula E electric car race in the United States, with organizers saying the event along downtown Miami's bayfront would help boost more energy efficient mainstream automobile technology."

"Fault lines dating back hundreds of millions of years in Oklahoma that have been recently reactivated could lead to a devastating quake in the state where many structures were not built to withstand major seismic activity, a report said."

"The Gulf of Mexico is close to being back to normal and there are no indications of any long-term damage from the 2010 Deepwater Horizon disaster, a BP report released Monday says."

"Chuck Fluharty parachutes into busted rural economies and tries to figure out how to get them out of the ditch. His latest challenge: Appalachia."

"RALEIGH -- Lawyers for North Carolina environmental groups urged the N.C. Supreme Court on Monday to force Duke Energy to immediately stop the groundwater contamination that’s been seeping for years from Duke’s coal ash pits at 14 sites around the state."

"Almost two years after an Exxon Mobil Corp. pipeline split open and sent Canadian crude flowing through a neighborhood in Mayflower, Ark., federal regulators have quietly proposed a sweeping rewrite of oil pipeline safety rules."

"Wind power will be cheaper than electricity produced from natural gas within a decade, even without a federal tax incentive, according to a U.S. Energy Department analysis."

"A federal appeals court upheld a district judge's decision to drop manslaughter charges against two former BP Plc (BP.L) well site managers over their roles in the 2010 Gulf of Mexico oil drilling disaster that killed 11 people."

"The 100 global power companies most at risk from growing pressure to shut highly polluting coal plants have been revealed in a new report from Oxford University. Chinese companies dominate the top of the ranking but US companies, including Warren Buffett’s Berkshire Hathaway, occupy 10 of the top 25 places."