The number of U.S. rigs has dropped along with natural gas prices. Here’s what that means for the “shale revolution.”
With drilling and fracking, the ingredients that make up the chemicals used to obtain oil and gas are legally allowed to be kept confidential.
Can natural-gas companies and environmental groups together set standards for fracking that will win the public's trust? An experiment in Pennsylvania will try.
Companies will have to disclose the chemicals they use to force oil and gas out of the ground. But only after they extract them, not beforehand.
