Unilever has signed a $200 million deal with TerraVia, a manufacturer of algae-based fuels, for the production of sustainable algae oils. The oils will be used in Unilever personal care products. Algae provide a great sustainable resource. It can be grown concentrated forms, requiring far less land per unit of energy than other biofuels, but it can also be tailored through various forms of genetic manipulation, to produce just about any type of oil imaginable. Moreover, algae feeds directly on carbon dioxide resulting in processes with very low, possibly even negative, carbon footprints.