STEP 1: build 100 nuke plants
STEP 2: ????
STEP 3: profit = 25million $
IRONY: 100 nuke plants = 200 Billion $
ANTI BUSH IRONY: the $$$ for the Iraq war would have been enough to replace every coal plant in this country with nuclear.
EDIT: but anyways, anything that could extract that much carbon from the atmoshpere would cost so much that the 25million incentive would be insignifigant in comparrison.