Just concluded a lovely evening of TP-ing houses when the angry owners start marching out? Toss these pumpkin bombs down the street and disappear in a cloud of smoke, leaving nothing but a burned-out squash shell in your wake. Pumpkin Bombs!
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.