okay so i just found out that there was a time when scientists thought it would be a good idea to power planes with poop yes you read that right poop powered planes the idea was to use microbes to break down human waste and produce hydrogen gas which would then be used to fuel the plane apparently this was supposed to be some kind of sustainable solution but like what even is thatwatch full video: https://youtu.be/6spQf_-7dHw?list=PLjBgcvtYPpORE75rfTGw-tot-YdUQkOvo