Today, the most fervent attention in biofuel development has shifted from soil to the sea, and specifically to marine algae.
“Algae yields five to 10 times more bioenergy molecules per area, per time, than any terrestrial plant,” said Mitchell, a native of oil-rich Houston, Texas. “Nothing else comes close.”
It can also absorb CO2 from industrial pollution and the leftovers from algae production can be used to feed animals. Now it appears the most promising way to produce is by marine not cellulosic methods.