Algae farming is a relatively safe bet in the current financial climate. Algae, a sludge colored illuminatingly lime to moss green, has going for it that it can be made anywhere –even in desert climates- and that it can be relatively swiftly adopted. A big negative is that the price of producing one gallon worth of algae based petroleum is still relatively cost inefficient compared to oil. But even at the negative end of this spectrum, there’s masses of potential.