“This is a big idea, a really powerful idea.” That's how MIT scientist, Issac Berzin, characterizes an invention he thinks could transform the energy economy and tackle global warming: Pollution-munching algae. Yes, algae. Those same single-celled organisms that create green scum on ponds are actually capable of cleaning up power plant exhaust, according to a fascinating new story in The Christian Science Monitor.

While devising technologies for the International Space Station, Berzin, a rocket scientist, discovered a strain of algae particularly adept at gobbling CO2. “Fed a generous helping of CO2-laden emissions, courtesy of the power plant’s exhaust stack, the algae grow quickly,” explains the article. Here's the added bonus: Biodiesel capable of powering automobiles can be derived from the profusions of algae that feed off of the powerplant pollution. How ‘bout that for a win-win.

Photo of algae, credit: Microscopy-uk.org.uk