Sources of Alternative Fuels include Hydrogen, Biofuels and Ethanol.

There is an article “A Cornfed Disaster - Bogus Biofuels” in the March 6, 2008 issue of Rolling Stone magazine that contains the following:

But two new studies show that biofuels don’t just suck up billions of dollars in federal subsidies and inflate food prices in the third world - they also speed up global warming.

According to the studies, most biofuels generate more climate-warming pollution than fossil fuels. 

There is more evidence of ethanol production driving up food prices around the world.  So while I agree, alternative fuel sources are a very good thing, they are not a magic bullet that will cure all of our problems.  The best solution is to simply drive less.

photo credit: Jeffrey Beall