It should come as no surprise to informed people that corn is a losing proposition when it comes to reducing greenhouse gases.  However, I was surprised to read about the effects of sugar cane.

Corn Can’t Solve Our Problem

Biofuels, if used properly, can help us balance our need for food, energy and a habitable and sustainable environment. To help this happen, though, we need a national biofuels policy that favors our best options. We must determine the carbon impacts of each method of making these fuels, then mandate fuel blending that achieves a prescribed greenhouse gas reduction. We have the knowledge and technology to start solving these problems.

 http://www.washingtonpost.com/wp-dyn/content/article/2007/03/23/AR2007032301625.html?nav=most_emailed