Algae will be a feedstock for humans in the 21st Century–not only for our food, but for gasoline, too. Here’s how one company, OriginOil, plans to do it:

Much of the world’s oil and gas is made up of ancient algae deposits. Today, our technology will produce “new oil” from algae, through a cost-effective, high-speed manufacturing process. This endless supply of new oil can be used for many products such as diesel, gasoline, jet fuel, plastics and solvents without the global warming effects of petroleum. More…

via OriginOil.

Battlestar Galactica fans will recall the use the fleet made of the goop harvested from the algae planet (picture here), particularly for food and “coffee.”