Originally Posted by Gingersmurf

Actually, it is the methane produced from cows (farts) The amount of cows (US Alone) that is needed for beef for human consumption far outweighs the GH Gasses the cars in the world produce. There has been talks about putting domes over major farms to trap the gasses, and pulling them into vessels or storage containers to be used later as a fuel of some sort. The major issue is the absence of natural light, the heat from the cows and sun, and the possibility of exploding the whole damn farm.

Food for thought.