Kudos to Brian Williams and Anne Thompson of NBC for taking a closer look at whether coal can actually be called clean. Earlier this week they aired a story (thanks to Josh Dorner at Sierra Club for flagging it) looking into the coal industry's favorite claim. Brian Williams' take? "Wishful thinking."
Why is there no such thing as clean coal? Get the dirt on coal at NRDC's Coal in a Changing Climate page, including this detailed coal issue paper.