Anyone with leather seats knows to approach the car with care after a day at the beach. No need with 3M's Solar Reflective Film, a thin multilayer clear film that reflects infrared light and thus reduces your car's interior temperature by 15 degrees. 3M is working with manufacturers to integrate the film into new cars beginning late next year.
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.