Does clean coal really exist?

An upcoming decision by the state Public Utilities Commission will determine whether a new coal plant will provide power for western Minnesota. The battle over the Big Stone II is part of a wider struggle between the coal advocates and environmentalists over the future of the coal industry.

Bob Schulte: CEO of Central Minnesota Municipal Power Agency.

Michael Noble: Executive director, Fresh Energy.

Joe Lucas: Executive director, American Coalition for Clean Coal Electricity.

Henry Henderson: Director, Natural Resource Defense Council's Midwest Program.