Biofuels: yes or no?!

Watch this video for some details :)

"Professor Stephen Polasky discusses how biofuels may offer advantages over fossil fuels, but the magnitude of these advantages depends on how a biofuel crop is grown and converted into a usable fuel. This can only be determines by analyzing the full lifecycle of the biofuel, including all direct and indirect inputs and outputs for crop and biofuel production. Dave Goldstein and Charlie Garlow discuss alternative power sources for automobiles and the search for the ultimate energy storage system."