We've spent thousands of years living side by side with dogs, and yet we're still constantly seeing what we can teach them--or, sometimes, it's them doing the teaching.
So it's no surprise that Popular Science would keep a steady interest in canines throughout our history, whether that meant using them as subjects in serious experiments or finding oddball uses for them (like having machines for producing arctic dog hair sweaters). Click on the gallery for that 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.