Minnesota Public Radio slideshow:
The ethanol equation
<Previous1 2 3 Next>
Cornell University scientist David Pimentel has done extensive analysis on the energy required to produce energy sources such as ethanol and gasoline. He concludes that it takes more energy to produce both those substances than they provide. (Photo courtesy of the University of Minnesota)

Cornell University scientist David Pimentel has done extensive analysis on the energy required to produce energy sources such as ethanol and gasoline. He concludes that it takes more energy to produce both those substances than they provide.

(Photo courtesy of the University of Minnesota)
©2009 Minnesota Public Radio : Terms of Use