With all of the whining going on about carbon emissions, I decided to do some research in ways to get the carbon out of the air.  A single device powered by a coal-energy plant would remove ten times the amount of energy needed to run it.  The device in this article was created over 5 years ago.  Imagine the improvement in the technology and drop in the costs to produce it.

http://cleantechnica.com/2008/09/29/scientists-create-device-to-remove-carbon-directly-from-the-air/