From Wales to Colombia, the scourge of opencast coal mining is being driven by our continued dependence on this dirtiest of fossil fuels, writes Kelvin Mason
See http://www.redpepper.org.uk/a-dirty-black-hole/?utm_source=Pepperista&utm_campaign=a061213939-96035f6d2dc1a0ab8d89ff1b8516f23b&utm_medium=email&utm_term=0_2d5c5bf744-a061213939-32704625.