A cancer-causing agent has been detected in the water supply of Glendive, Montana, after 40,000 gallons of oil spilled into the Yellowstone River.
Plans to build the Keystone XL pipeline are on hold,but there are very few answers about the health risks involved in moving that kind of oil, as pipeline accidents in Michigan and Arkansas are demonstrating. WhoWhatWhy takes a look.
When the Environmental Protection Agency abruptly retreated on its multimillion-dollar investigation into water contamination in a central Wyoming natural gas field last month, it shocked environmentalists and energy industry supporters alike.
Watch: Concerned citizens from the site of Exxon's Arkansas oil spill hired an independent analysis of the water and air there just as residents face growing health concerns.
Exxon's safety record gets worse by the day as they work now to clean up two messes, and the Arkansas attorney general now describes the town of Mayflower as a scene out of "The Walking Dead."