It’s not exactly as modern as the updated version of Tony Stark’s getup that you saw in The Avengers, but NASA scientists have developed a “robotic exoskeleton” that is engineered to improve mobility for astronauts and paraplegics. The 57-pound device is worn over the legs and includes a backpack that reaches up over the shoulders. Joints in the device allow for movements like stair-climbing, sidestepping, and flexing the foot. So, Thanos better get his act together, because the Infinity Gauntlet won’t be any match for an entire army of iron men. [NBC Philadelphia]