Can you believe that [Tom Tilley]’s wife was just going to pawn off this perfectly good salad spinner on the thrift store when it’s so ripe for hacking? We couldn’t, either. Fortunately, he caught it ...

A new magnetically actuated metamaterial can twist, contract, and move like a robot without any motors, electronics, or internal power sources. Inspired by origami, the system—called a “meta bot”—uses ...