Algae a really green investment

Can it get much greener than algae?

Every year since 2006 the number of companies exploring algae as a potential biofuel have doubled. Currently, there are 50 companies exploring algae, a potential fuel that ExxonMobil believes that of all the alternatives, algae "has the most potential in terms of scalability and fitting into the vast infrastructure of existing refineries and filling stations."

Nonetheless, CNN points out cost-effectiveness is still an issue, but an issue that more and more researchers believe can be solved, especially now that enough investments are being made into this space.

"The possibilities are endless," says Samhitha Udupa, a research associate with Lux Research.