Strip mines in the Powder Ridge Basin of Wyoming and Montana are isolated and out of sight. Their efforts to expand exports of coal to Asia are making them more visible.
The fracking boom is bringing in a surge of development — and tax revenue — to North Dakota. Now conservationists have a plan use some of that growth to protect the environment.
The Environmental Protection Agency's is issuing new limits on emissions by coal-burning plants that new plants will need advanced carbon-capture technology to comply.