Re:"Nanotechnology", bah! (Score 2, Interesting)

Well, fine. Call it what you want. Did you know that the zinc oxide nanoparticles in sunscreen produce free radicals when they absorb UV light? That's something that the old white sunscreens (that used zinc oxide microparticles) didn't do. That's the general problem with nanotech--the same material can be inert or toxic depending on its size, method of preparation, etc. The FDA is currently set up to deal with distinct molecules, and they have to decide when a nanotech product counts as a "distinct molecule."

--A Nanoparticle Chemist