Microscopic sponge turns dirty cooking oil into biodiesel on the cheap

Will we solve our energy challenges with one big innovation, or a series of small ones? Cooking oil alone won’t do the trick globally, but incremental gains can stack up. “Scientists at Australia’s RMIT have developed a tiny sponge with big potential, and say the micron-sized material can be used to convert discarded cooking oil into biodiesel in a very cost-effective manner.” | learn more