A Roman chalice that relies on nanoparticles to do a nifty trick: http://www.smithsonianmag.com/histo...l&utm_campaign=20130825-Weekender&device=ipad
"So, apart from the sanitation, medicine, education, wine, public order, irrigation, roads, the fresh water system and public health, and of course nanotechnology, what have the Romans ever done for us?"