Photos: Solazyme rethinks algae

In Solazyme's laboratory, racks and racks of petri dishes hold algae in various stages of testing. There are millions of different strains of algae in the world that produce different types of oils. The tricky part for algae-processing companies like Solazyme is figuring out which strains are best to use for fuel, cooking oil, or other applications like skin care products.

Photo by James Martin/CNET News.com