Rocket Biodiesel

"Most rocket scientists are knee-jerk anti-environmentalists. But we're going to run out of rocket fuel at some point, so what are we going to run our rockets on after that?"
The above statement was uttered by Steve Harrington, a leader from engineering firm Flometrics that claim the possibility of using biodiesel as rocket fuel in the future. Yes, the commercially-available biodiesel we see today might be able airplane. It's just a possibility for now though, seeing as the test conducted used what NewScientist describes as a "modest" engine. Biodiesel, however, did provide 820 pounds of thrust compared to the 840 figure exhibited by the more conventional kerosene-based rocket fuel engine, with the possibility of performing better by modifying the rocket setup. The possible usage of biodiesel for rockets has more engineering than environmental benefits though. Biodiesel is reportedly denser than kerosene, so there's more power for the same tank size and amount of fuel.