"Federal regulators said on Tuesday that they had fined three companies for mislabeling the type of crude oil they were transporting. The penalties — a total of $93,000 — were the first from surprise inspections begun after since a series of accidents in the last year underscored the hazard of transporting highly flammable oil by rail."

"Federal coffers are missing out on what could be billions of dollars in lost revenue due to shoddy accounting work by the office that handles leases for coal mines on public land, according to a report made public today by the investigative arm of Congress."

"While Obama talks of putting America on the path to a clean, green future, we're flooding world markets with cheap, high carbon fuels."

"EDEN, N.C. -- A pipe under a coal ash pond broke in northern North Carolina, releasing an unknown amount of coal ash into the Dan River, Duke Energy Corp. said Monday."

"Four politically vulnerable Senate Democrats are urging U.S. President Barack Obama to approve the Keystone XL pipeline, spotlighting the implications of an election-year decision that may influence which party controls the chamber."

"EDMONTON - A new study released Monday suggests environmental assessments of oilsands projects have underestimated the impact of pollution, raising questions about the accuracy of data used as part of the approval process."

"U.S. President Barack Obama still wants to hear from other federal agencies before deciding whether to accept the State Department's finding that the Keystone XL pipeline would have no major impact on climate change, his top aide said on Sunday."

"Naturally occurring radionuclides are widely distributed in the earth’s crust, so it’s no surprise that mineral and hydrocarbon extraction processes, conventional and unconventional alike, often produce some radioactive waste."