…retirees have better sperm than college-age guys…at a British stone-circle site, new buried megaliths have been discovered…musings about upcoming glowing genetically-engineered tattoos for teens…on the eve of landing yet again on Mars this month and next, a retrospective interview about whether or not Viking found life there in the 1970s…new meaning to the holiday lyrics “Do you see what I see“…and finally, a GREAT article about how a bad cigar gave us the classic Stern-Gerlach quantum-mechanics experiment that every schoolchild alive today should know about…and doesn’t. As Physics Today notes, “The means to probe nuclei, proteins, and galaxies; image bodies and brains; perform eye surgery; read music or data from compact disks; and scan bar codes on grocery packages or DNA base pairs in the human genome all stem from [the Stern-Gerlach experiment].”