No vacuum-not-sucking Dad Jokes. I'm trying, really. Dyson says that it's new ball-driven DC41 Animal is better at grabbing messes off hardwood floors than a pair of white socks. That's because its lip rests closer to the floor than any other vacuum, so pesky flecks don't up and escape -- especially when the Dyson-signature inner funnel-cloud-of-a-turbine gets things all whipped up.
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.