Podcast:Who Smarted? - Educational Podcast for Kids Published On: Wed Nov 03 2021 Description: How was glass discovered? How is glass molded into so many things? Why is glass sometimes clear and sometimes colorful? For free home activities sign-up at www.WhoSmarted.com See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.