It looks like one Nobel Prize winner groups biofuels with another, ahem, organic and somewhat odorous material. Prize winner Hartmut Michel, who's the director of the Molecular Membrane Biology at the Max Planck Institute for Biophysics, has gone on record criticizing the use of biofuels for alternative energy because of their lack of efficiency, according to ClimateSanity.

For instance, the amount of usable chemical energy storied in German biodiesel, which is made with rapeseed, ranges from 0.1 percent to 0.3 percent, and that doesn't take in consideration the energy used (and lost) in ploughing the fields used to create the plants in the first place. Michel also went on to take to task the use of materials such as sugarcane and microalgae for biofuel production.

Those who miss chemistry class can read the ClimateSanity post here, but the CliffsNotes version will say that Michel believes it's a bad idea to depend on biofuels as an alternative energy source because of a combination of the high amount of energy needed to make the raw materials and the potential food shortages created by diverting such plants away from the global food supply. We've heard these arguments before, but not often with Nobel attached to them.

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