Many thanks to Andrew Maynard of 2020science for pointing out this great mini-lecture on why nanotechnology is important.  Maybe you’ll get an idea for your next technical explanation.

This is an entry in the ACS NanoTube contest, submitted by Irene Suarez-Martinez and Chris Ewels.  Lots more nano-science at the contest site, and at Nano2Hybrid.net, where Suarez-Martinez and Ewels work.