Federal Lab Says It Can Harvest Fuel From Air (With a Catch)
http://dotearth.blogs.nytimes.com/2008/02/13/federal-lab-says-it-can-har...

This plan has a minor hurdle, too; the electricity for driving the chemical processes, according to a white paper describing the overarching concept, would come from nuclear power. The proposal says it’d be worth it to have a payoff of steady, secure streams of methanol and gasoline with no carbon added to the atmosphere (and a price for gasoline at the pump of perhaps $4.60 a gallon — comparable to petroleum-based fuels as oil becomes harder to find).