Is Biofuel Really a Viable Alternative for the Aviation Industry?

The team over at TreeHugger wondered how much land would be required to meet the biofuel equivalent of current aviation energy needs:With a continuing stream of announcements regarding the aviation industry's drive to keep on flying while being a bit greener about it-KLM is making the first aviation biofuel test flight with passengers today-TreeHugger wondered how much land will be required to power the global aviation industry with biofuels.The did a little back-of-the-napkin math and the answer they found is surprising (hint: it's an agriculture area equivalent in size to an entire U.S. state. A large U.S. state). In an effort not to totally steal their thunder, read about it yourself in the full post.