For the past several years, the answer to the question of whether producing ethanol from corn is a net energy benefit or loss has depended on who you asked. An assortment of studies have come down on both sides of the equation. Michigan State University professor Jake Ferris comes down firmly on the net benefit side in an op-ed published by the Lansing State Journal.
Ethanol Water Use
Ethanol company Poet (formerly Broin) today announced something called Ingreenuity, a "new initiative to enhance the environmental performance of ethanol." The first step in the process is to decrease the amount of water it takes to make the biofuel down to