Michael Bartl’s office is overrun with dead beetles. They’re not the remains of an infestation. The green corpses of Lamprocyphus augustus, native to Brazil, led Bartl to one of the most sought-after crystals in optical science.
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.