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Making an energy pledge is one thing, following through is a whole different story
China's faraway region of Xinjiang is becoming the country's newest power base.
Glencore, Anglo American and BHP Billiton hoped that diversifying would work.
The mass layoff threatens the social fabric of a region where growth is faltering.
As coal mines in the U.S. close, an entrepreneur has a plan to pair mines with carbon sinks.
About a third of the state's electricity comes from burning lower-quality lignite.
The rules limiting carbon emissions will speed utilities' movement away from coal as a fuel.
On the losing side of the new rules: coal.
Residents protest the dump that generates millions in revenue for poor rural area.
A federal court in Washington hears a challenge to the EPA's Clean Power Plan.
