For every 300 Muscovites, there's a stray dog wandering the streets of Russia's capital. And according to Andrei Poyarkov, a researcher at the A.N. Severtsov Institute of Ecology and Evolution, the fierce pressure of urban living has driven the dogs to evolve wolf-like traits, increased intelligence, and even the ability to navigate the subway.
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.