Dr. Jason Steffen, an astrophysicist at Fermilab, came up with a method he claimed could cut airplane boarding times drastically about two years ago. More recently, he tested several different methods of boarding, complete with video: Boarding as we do it now (blocks of fliers, boarding from the back of the plane to the front), compared with a random boarding system and a careful one of his own design. Those three methods, by the way, are in ascending order of effectiveness.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.