Secrets of Venetian glass that might have cost your life

In this Jan. 22, 2016, photo, glassblower William Gudenrath paints enamel on a bowl with techniques used by Renaissance Venetians at the Corning Museum of Glass in Corning, N.Y. Gudenrath spent decades researching how Renaissance-era glassmakers produced objects that are now considered works of art.
Mike Groll | AP
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