In the MIT Game Lab's A Slower Speed of Light, the speed of light slowly decreases as you move through the game. Needless to say, things get weird. In addition to serving up a psychedelic experience, the game also teaches you about the Doppler effect and time dilation.
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.