NANOTECHNOLOGY: Attacking acne with gold nano-bombs.

This is cool, but I was noticing the other day that serious teenage acne — I’m not talking about an occasional pimple, but serious cases with the potential for scarring, etc. — is much, much rarer than it was when I was a teenager. I assume that’s the result of better medications, both prescription and non-prescription, but I haven’t read much about the phenomenon. Yet once you think about it, it’s pretty striking.