I like how this thread was brought back to life.
What have we learned in the past couple years of ethanol production?
Biofuels are no damn good if you use a food crop, or grow the source of the biofuel in a place where food has been recently grown.
Read: http://www.mediastudy.com/articles/av5-8-08.html
So how about a source of biofuel that we can grow in places where we don’t grow anything that we eat? Desert? But how?
What do you need to grow algae? Sun and water. There is plenty of sun in the desert. Fill 'em with clear tubes to grow algae!
The only problem I foresee is the demand for water going up drastically.
I don’t know what else to say.