Over the last four years, emissions in the United States declined more than in any other country in the world. Coal plants and coal mines are being shuttered. That's not from increased use of solar panels and wind turbines, as laudable as those technologies are. Rather it's due, in large measure, to the technological revolution allowing for the cheap extraction of natural gas from shale. By contrast, Europe, with its cap and trade program, and price on carbon, is returning to coal-burning. read more »