According to The Guardian…

Nuts picked from Amazon rainforests helped fuel the world’s first commercial airline flight powered by renewable energy on Sunday. A Virgin Atlantic jumbo jet flew from London to Amsterdam with one of its fuel tanks filled with a bio-jet blend including babassu oil and coconut oil…British billionaire Branson said, however, it was unlikely the nut of the wild growing babassu palm would play a key role as airlines turn to renewable fuel sources to cut the industry’s greenhouse gas emissions. “We did not want to use biofuels such as corn oil which were competing with staple food sources,” he said, adding he believed algae produced in places like sewage treatment farms were the most likely future source of renewable fuel for the airline industry.

Algae. Really?