China’s Pterodactyl I UAV strongly resembles the U.S. military’s Predator drone. It appears to be designed for medium-altitude, long-endurance surveillance and strike missions. Another Chinese drone—the Soaring Dragon—looks like a smaller version of the U.S. military's RQ-4 Global Hawk; analysts think it’s designed for high-altitude maritime surveillance and reconnaissance.
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.