"Six environmental groups asked a judge Tuesday to be allowed to side with the federal government in opposing two lawsuits that contest new rules for oil and gas drilling on federal lands, among which is a requirement that companies report information about chemicals used in hydraulic fracturing."

"Ten environmental groups Tuesday sued a federal agency over its approval of a plan by Royal Dutch Shell PLC for exploratory petroleum drilling off Alaska's northwest coast."

"While the global fracking boom has stabilized North America’s energy prices, Chicago — America’s third largest city and the busiest crossroads of the nation’s railroad network — has become ground zero for the debate over heavy crude moved by oil trains."

"Oil fell for the first time in three days as OPEC is seen sticking with its strategy of favoring market share over prices at a meeting this week."

"The 'war on coal' started long before Obama took office to control the costly and deadly health impacts of an otherwise cheap and abundant fuel."

"Natural-gas profits have Shell and BP, among others, calling for increased use of carbon-emissions fees ahead of a make-or-break climate summit in Paris."

"The National Transportation Safety Board (NTSB) is putting the blame squarely on Royal Dutch Shell’s shoulders for the late 2012 grounding of an offshore drilling rig it owned on an Alaska island."

"Maryland's fracking moratorium survived its last possible political challenge today."

"The Environmental Protection Agency on Friday released a much-delayed proposal for the amount of biofuel that must be blended into conventional vehicle fuel, seeking to reduce the levels now specified but still require modest increases over the next few years."

"ANN ARBOR, Mich. — Inside the National Vehicle and Fuel Emissions Laboratory here, a mammoth contraption, with steel rollers, advanced electronics and exhaust tubes, is nearing completion."