Researchers believe they have conducted the first instance of an animal producing current with nano-generators, by harnessing the power of exercising hamsters. Plus -- the answer to the question that has weighed on the greatest minds for generations: how many hamsters does it take to power a cell phone?
Also in today's links: where American ideas come from, where methane in the Arctic is going, and more.
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.