"The world is investing too much cash and hope in carbon capture and storage. Coal is the dirtiest of fossil fuels, producing twice the carbon dioxide that natural gas does when it is burned. That makes it a big cause of global warming. But some of the world's biggest economies rely on coal. And secure domestic sources of energy are particularly prized at a time when prices are volatile and many of the big oil and gas exporters are becoming worryingly nationalistic. It is hard to see how governments can turn their backs on such a cheap and reliable fuel." (Quoted from article)