Researchers at McGill University have developed the strongest and toughest glass ever known. Inspired, in part, by the inner layer of mollusk shells, this glass does not shatter when hit, and acts more like plastic. The material, once commercially viable, could be used to improve cell phone screens, among other applications in the future. Interestingly, this may be an example of modern science rediscovering an old technology, now long lost. Apparently, a form of flexible glass existed during the reign of the Roman Emperor Tiberius Caesar. So the story goes, as told by Petronius, a glassmaker brought a drinking bowl...