U.S. production of coal has continued to decline since peaking in 2008, according to a report from the U.S. Energy ...

In Appalachian Ohio, when a coal-fired power plant shuts down, entire communities feel the aftershocks. At Ohio University's ...

Supply and demand, of course, also play a key role in the price of gold per gram or ounce. There is only so much gold to be mined and gold mining is not cheap. When gold demand outstrips gold supply, ...