The Lycurgus Cup is a Roman goblet, recently found to make use of nanotechnology to change color. Know what else changes color? A pregnancy test!

Q. I own an antique deep-red glass goblet with lid. The lid has been broken in several places over the years and glued back together. Is there some way or someone who can make it look like new again?

My vision brings me back to Connecticut, as I gently caress the goblet. It’s the small bubbles of Chrzanow air trapped in the glass — air that my ancestors breathed, and I think — if I free ...