Astronauts, director and various producers before the New York premiere of In the Shadow of the Moon. From left to right, are the astronauts, Harrison Schmitt, Charlie Duke, Edgar Mitchell, Alan Bean, and Buzz Aldrin. The director, David Sington, is second from right.
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.