What if the sweat produced by your body could power your gadgets? And what if the connection between the two could be made by a temporary tattoo, the more you sweat, the more power the tattoo generates? That's exactly what researchers at UC San Diego have developed—and one day, it could power your wearables.
When you happen upon a couple of bear cubs in the woods, what's the first thing that should come to mind? If you answered "I wanna squeeze 'em," you're wrong. It should be "where's the mom?" And with good reason. Numerous non-human mammals are known to exhibit heightened levels of aggression in defense of their young.