This video just blew my mind! I'm working on the Sydney, Australia version of the ETA Cafe business plan, part of which is to partner with and pioneer developing technologies at the University level to bring them to market. UNSW has some leading solar and nanotechnologies, but this is one of the best illustrations of what's to come:
Now, to be fair and balanced, nanotechnology production does pose a lot of threats. We have no idea what happens to the environment when we introduce complex materials that are small enough to breath and could lodge themselves in our lungs. We simply have no idea what may happen with the introduction of new molecular sized structures into the ecosystem.