In 1915, chemists at Corning Glass Works in Corning, New York, created a special borosilicate glass that was resistant to thermal expansion and contractions. This new glass—branded as “Pyrex”—held up under quick, extreme temperature changes, which made it ideal for railroad lamps, scientific experiments, and, of course, cooking. Beginning in 1921, a company called Joblings produced Pyrex under license from Corning in Great Britain and...Continue Reading