Here is another interesting article.
http://www.nytimes.com/2007/12/02/us...ef=environment
I quote: "An acre of corn can produce about 20 gallons of oil per year, Dr. Ruan said, compared with a possible 15,000 gallons of oil per acre of algae.
An algae farm could be located almost anywhere. It would not require converting cropland from food production to energy production. It could use sea water and could consume pollutants from sewage and power plants."
As they point out it's going to take more research, but the outlook is promising.
Donna