Laser warfare took a big step closer to reality today as Boeing officially selected an Oshkosh Defense military truck to haul around the beam control system for the tactical laser it's developing for the U.S. Army. Put another way, the idea of driving large, powerful laser weapons around on trucks has gone from the design phase to the fabrication phase. Surely we'll soon witness the epic laser wars we've all been anxiously awaiting.
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.