This Smart Vest Lets the Deaf 'Hear' With Their Skin

What are the limits of human perception? Take a second and concentrate on your surroundings: the subtle flickering of your laptop screen, the faint whiff of lingering coffee, the muffled sounds of traffic, the warm touch of sunlight peeking through your window. We owe our understanding of the world to our various senses. Yet what we naturally perceive is only a sliver of the physical world. The eerie beauty of infrared is beyond our grasp,...