Algae biofuels for less than $40 a barrel?

That green stuff in your koi pond could power the world for less than $40 a gallon, if Australian biofuels company Algae.Tec has its way.

Monsanto invests in Sapphire for algae, crops research

Global agriculture and biotechnology giant Monsanto has taken an undisclosed equity stake in biofuels player Sapphire Energy. The two companies will also team up for a multi-year research collaboration.