The World Needs to Quit Coal. Why Is It So Hard? Coal, the most polluting of energy sources, shows no sign of disappearing three years after the Paris agreement, when world leaders promised decisive action against global warming. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:How ISIS Is Rising in the Philippines as It Dwindles in the Middle EastIran Envoy Rejects U.K. Diplomatic Protection for Detained Dual CitizenPower Still Flickering, Venezuelans Take to Streets for Rival ProtestsChinese Entrepreneur Takes On the System, and Drops Out of SightBodies of 2 Missing Climbers Spotted on Pakistan Mountain, Envoy SaysNew Images of North Korea Buildup Confront Trump’s Hopes for Disarmament