"Clean Coal" No Longer Oxymoron at New Power Plant

Maybe you've heard the plans for "clean coal" (aka carbon capture and storage), a technology that collects carbon-dioxide exhaust from formerly high-polluting power plants, condensing and freezing it for storage in depleted natural-gas fields. This month, energy provider Vattenfall fired up the CO2 collection process… » 9/21/08 4:30pm 9/21/08 4:30pm