On his NY Time's DotEarth blog, journalist Andy Revkin writes: 
This enduring notion — that the world can have its coal and climate, too, by pumping the carbon dioxide from combustion into the earth — has been promoted by institutions including Peabody Energy , the world’s biggest coal company (see its coal-sales ticker here ), and the Natural Resources Defense Council . A group that pushed the clean-coal theme at the Democratic convention, the American Coalition for Clean Coal Electricity , will be heading to the Republican convention next week. Environmentalists have attacked the group as the latest in a string of industry propaganda mills ."
Thanks for the link to DeSmog Andy!