Originally posted at the Wonk Room.

The coal industry has spent hundreds of millions of dollars to get out the message of “clean coal” through front groups like the American Coalition for Clean Coal Electricity, campaign contributions, and an army of lobbyists. But the devastating Dec. 22, 2008, coal ash slurry spill of the Kingston Fossil Plant in rural Tennessee broke through the cacophony of clean coal carolers. The sludge came from “cleaning” coal of toxic metals like arsenic, mercury, and lead so less went into the air. This ThinkProgress Wonk Room video is a stark reminder that in reality, coal isn’t clean.

Watch it:

This week the news of progress away from dirty coal has reached a fever pitch:

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Monday:

Tuesday

Green Inc.‘s Tom Zeller Jr. notes, “The coal industry — which suffers from an image problem to begin with — has had a particularly rough few days.”