Earthquakes, tsunamis, cyclones -- disasters like these make the natural environment both unnavigable and dangerous for human search-and-rescue teams. That's when it's time for robots to come to our rescue.
Earthquakes are a recurring problem in Japan, an archipelago that rests on four tectonic plates. Japan also happens to be a hotbed of robotics research, so the two have come together in surprising ways.
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.