Sunglasses are meant to block out bright sources of light, but how many actually do so. That is, how many actively seek out sources of glare and block them out? Sure, there are those tint-shifting lenses that transition from sunglasses to clear lenses when the wearer moves from brighter to darker environments, but upstart company Dynamic Eye wants to up the ante by creating glasses that actually seek out the source of glare and darken the lens only where necessary.
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.