"The Barnett Shale's emissions have been vastly underestimated, sweeping Environmental Defense Fund-backed study finds."

"It took decades for the stand of hardwood trees near Lake Texoma to grow tall. It took less than a day for 3,000 gallons of drilling wastewater to destroy them."

"Mexican copper miner, smelter, and refiner ASARCO must pay more than $163 million to settle U.S. government charges that the company broken the law by releasing hazardous air pollutants, including lead and arsenic, from its primary copper smelter in Hayden, Arizona."

"The Sooner State is part of a trend toward leaving farmland untilled to tackle runoff and climate change, but some remain wary of associated pesticide use".

"An Oklahoma oil company is challenging the state’s limits on drilling wastewater injections that came in response to a sharp increase in earthquakes."

"An earthquake with a magnitude of 4.5 that struck near the U.S. crude oil hub of Cushing, Oklahoma on Saturday occurred just days after regulators imposed new rules meant to prevent temblors in the area and said more changes were possible."

"The Environmental Protection Agency said Wednesday it will set up a temporary treatment plant for wastewater flowing from the Gold King Mine in southwestern Colorado after 3 million gallons surged out of the mine in August, tainting rivers in three states."