Want a Robot That Can Really Feel? Give It Whiskers

Among the many reasons humans are bizarre among mammals (the dearth of body hair, the bipedalism, the fact that someone invented the turducken) is a sad shortcoming: You and I don't have sensory whiskers. Cats, dogs, raccoons, sea lions--you name a mammal and it's probably got special hairs sprouting out of its face. After all, whiskers are immensely useful. Rats use them to navigate the darkness, for instance, while a seal's whiskers detect the movements of fishy prey. Whiskers are all the rage in nature, so why not give them to robots?