Roman dodecahedron: A mysterious 12-sided object that has baffled archaeologists for centuries There are more than 50 theories for the function of this 12-sided, pentagonal-faced bronze object — but archaeologists have never quite figured it out.

of course that's a #molecularModel of C20H20 #dodecahedrane - complete with the hydrogens. Teaching device for Roman organic #chemistry courses. www.livescience.com/archaeology/romans/roman... #nanoworld