"The U.S. State Department must halt plans to expand an oil sands pipeline route from Canada to Wisconsin until possible environmental harm has been closely studied, several green groups said in a lawsuit filed on Wednesday."

"Two years ago, in a preemptive move, Shell sued a host of environmental and advocacy groups to prevent them from suing Shell over its plans to drill for oil in the Arctic. On Wednesday, a federal appeals court called Shell's legal strategy 'novel' and ruled it unconstitutional."

"Health concerns about oil field fracking have been focused on the mixed brew of chemicals injected into wells. But it is another innocuous-sounding substance — sand — that poses a more serious danger to workers."

"Bills to take approval of the contentious Keystone XL pipeline from Canada out of the hands of the Obama administration could be headed for votes in the U.S. Senate and House of Representatives.

Democrat Mary Landrieu, chair of the Senate Energy Committee, said she would propose debate later on Wednesday and a vote on Thursday on a bill floated in May to approve the project, which would deliver heavy Canadian oil sands crude to the U.S. Gulf Coast.

The International Energy Agency Wednesday issued a report saying the world is still hooked on fossil fuels, and will have to cut carbon emissions further.

"The average price of gasoline will be below $3 a gallon in 2015, the government predicted Wednesday. If the sharply lower estimate holds true, U.S. consumers will save $61 billion on gas compared with this year."

"A week after a historic vote to ban hydraulic fracturing (or fracking — the controversial drilling method that forces oil and gas from shale formations with pressurized water, sand and a host of chemicals), Denton, Texas, has been told the state will continue to issue drilling permits within the city limits."

"Senate Democrats are considering bringing legislation to the floor during the lame-duck session that would approve construction of the Keystone XL oil pipeline, according to a report in Bloomberg. The report by Bloomberg, quoting a Democratic Senate aide, said Democrats are considering the vote as part of an effort to save Sen. Mary Landrieu (D-La.)."

"Fossil fuels are reaping $550 billion a year in subsidies and holding back investment in cleaner forms of energy, the International Energy Agency said."

"Conservation groups have filed initial paperwork to sue the Tennessee Valley Authority, contending that harmful pollutants have been seeping from 55-year-old coal ash storage ponds at the Gallatin power plant and into drinking water."