"Saudi Arabia, the world's largest crude oil exporter, plans to diversify its economy to help combat climate change in a move that could reduce expected carbon emissions by up to 130 million tonnes a year by 2030, the government said on Tuesday."

"Arch Coal, the nation's second largest coal company, this week told the Securities and  Exchange Commission that it may join other coal companies in filing for bankruptcy. The company said it may have to seek Chapter 11 relief because of 'extremely challenging current market conditions.'  The company, which is burdened by $5 billion in debt, said it did not see an upturn in sight."

"Greenhouse gas emissions per capita are falling in 11 of the Group of 20 major economies, a turning point for tackling climate change, a study showed on Tuesday."

"Dispersants used to encourage the oil's breakdown actually hindered microbes that were helping clean-up the huge slick, says new research."

"Australia and South Korea are pushing back hard against U.S. efforts to sway wealthy nations away from financing coal projects overseas, according to documents provided to ClimateWire."

"In an era where staunch opposition to raising taxes on anything is a defining principle of the Republican Party, the GOP gubernatorial nominee in Louisiana found one industry he believes doesn’t pay enough in taxes: solar energy."

"After a ruptured oil pipeline went undiscovered for 17 hours, spilling 800,000 gallons of heavy oil into Michigan's Kalamazoo River in 2010, Congress ordered an audit that laid bare the industry's lackluster record of spotting leaks. But after five years of work, the Obama administration has proposed a regulatory overhaul that fails to patch that hole in the nation’s pipeline safety net — a revelation that has been largely ignored amid Washington's obsession with the Keystone XL pipeline."

"Peabody Energy, the world’s biggest private coal company, has agreed to make more robust disclosures to its investors about the financial risks it faces from future government policies and regulations related to climate change and other environmental issues that could reduce demand for its product."

"Of 32 BNSF train cars that hurtled off the tracks near Alma, Wis., on Saturday, five of them broke open and spilled at least 18,000 gallons of ethanol into the Mississippi River, the railroad company said."

"President Obama announced on Friday that he had rejected the request from a Canadian company to build the Keystone XL oil pipeline, ending a seven-year review that had become a symbol of the debate over his climate policies."