Coming soon: Kill skin infections with a flashlight

An international team of scientists has created a handheld, battery powered device that has been shown to effectively rid skin of bacteria in an instant by blasting it with plasma. The plasma flashlight, which shouldn't be confused with a plasma torch that will damage much more than bacteria if used on the skin, could provide a convenient way for paramedics and military personnel to deal with harmful bacteria in the field. The self-contained device is powered by a 12 V battery and doesn't require any external gas feed or handling system. The plume of plasma it generates is between 20-23C (68-73.4F), so it won't damage the skin. It is also fitted with resistors to stop it heating up and becoming too hot to touch. Its creators say it can also be easily manufactured at a cost of less than US$100 per unit."

http://www.gizmag.com/plasma-flashlight/22075/

Very interesting, I remember reading some research carried out in the 1930's I think showing that natural UV from the sun kills dental carries, promotes gum health and protects against periodontal disease. Thing is though back in the very beginning of the 20th century something like 90% of people worked outdoors. Nowadays I think it is probably the reverse.