Power plants are not required to capture their carbon dioxide (CO2) emissions, but they are working hard on the technology anyway.

Alstom's Carbon Capture Pilot Project Carbon Capture at work

The pilot facility at the Pleasant Prairie Power Plant takes about 1 percent of its flue gas for use in the carbon capture demonstration project.

Using a chilled ammonia process developed by Alstom Power Inc., the test project captures 90 percent of the carbon emissions. The demonstration project began in March 2008 and will last for two years.

Later on the Factuality Tour, we'll see this technology in action elsewhere in the country, including one that will come online as the nation's first commercial-grade power plant to capture and sequester its own emissions.