FASTER, PLEASE: Spray-on Skin Is a Reality. “The skin gun is not science fiction—it’s a prototype medical device that literally sprays skin cells onto burn victims to re-grow skin. Old methods like skin grafts took weeks to heal; the skin gun needs about an hour. We’ve heard about the spray-on skin gun back in 2008 but we didn’t think it’d become this real, this useful, this fast. Though it is still technically in an experimental stage, the skin gun has already successfully treated over a dozen burn victims.” Note: Don’t follow the link if images of burn victims bother you. (Thanks to reader Douglas Oosting for the link.)