Much like the gadgets on Star Trek that cure tour ailments by being passed over them accompanied by the usual humming noises, Researchers in Hong Kong and Australia are announcing a battery-powered plasma gun that can disinfect a wound to a modest but significant depth.
Extrapolating, I would imagine this could also be used to purify modest amounts of water in a pinch. A useful gadget to have out in the woods.
Makes me wonder what one might do by scaling it up to a 5Kw model to run off your home generator. Lessee, how many watts available in a nuclear-powered navy cruiser? Or maybe from a freighter boat, minding its own business in waters off Somalia?
H/T to Jigsaw for this one.