In "Get Out Now!" [Oct. '03], Stephan Wilkinson tells the history of fighter-plane ejection seats starting from the early 1940s, but high-altitude escape technology actually reaches back at least five centuries. Professional skydivers Katarina Ollikainen and Adrian Nicholas recently teamed up with an art historian to construct in painstaking detail a parachute designed by Renaissance artist and inventor Leonardo da Vinci.
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.