In 2007, due to the Ethanol mandate there was a 400% price increase on corn food products in the world. As a results countries began growing crops by clearing out rainforests. Clear cutting and burning rain forests to make land available for new crops created more greenhouse gases than the total exhaust from EVERY vehicle in the WORLD. When we fill up our vehicles with Ethanol or use corn based plastics (such as PLA) we are contributing to the burning rainforests.