What if you're in surgery and the power goes out? No lights, no oxygen -- and your anesthesia stops flowing. It happens constantly in hospitals throughout the world, turning routine procedures into tragedies. Erica Frenkel demos one solution: the universal anesthesia machine.img src="http://feeds.feedburner.com/~r/TEDTalks_video/~4/cIcVmFRVXX8" height="1" width="1"/