Army Sgt. Brendan Marrocco has become only the seventh person in the world to receive a double arm transplant after losing all four of his limbs in combat. This is amazing and it really makes me appreciate that no matter how fancy the best electronics and robotics become, they are no substitute for Mother Nature. I'll be interested to see how his arm control progresses. Time to add @BMarr86 to my Twitter feed! Check out those scars! The full story is here.