The U.K. used coal power to drive the Industrial Revolution and expand the British Empire. It's now the first major economy to quit the fossil fuel, a primary contributor to global warming.
Keyser in West Virginia represents a national shift in American energy production. And in a town that was defined by coal for generations, change can be difficult.
The rules would lower emissions of mercury and other toxic pollutants that can harm brain development of young children and contribute to heart attacks and other health problems in adults.
Since the return of the Taliban, Afghanistan's coal exports have increased — and so has child labor. At a coal mine in Baghlan province, boys earn between $3 and $8 for a day's work.
A hot, dry summer has meant the water level on the Rhine River, Western Europe's most important waterway, is at a record low, making it too shallow for many ships to pass.
Conservative U.S. Supreme Court justices sided with coal companies in a recent case over the EPA's authority. But market forces have pushed the ongoing decline of coal power.