Answers to Questions Kids Ask! - Where "Why?" Turns to "Wow!"
Glass has been made by humans for about 4,500 years, and it generally consists of silica (sand), potassium or soda, lime, and occasionally some other chemicals. They are melted together and cooled at air temperature so that the material is hard, but has a smooth and flowing shape, more like a liquid. The precise recipe for glass changes from place to place — the chemistry and techniques are often closely guarded secrets.
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Word of the Daykatzenjammer:
katzenjammer: uneasiness; anguish; distress.
Born on this dayJanuary 19, 2017
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1931 - Tippi Hendren
1939 - Phil Everly
1942 - Michael Crawford
1946 - Dolly Parton
1949 - Denis Taylor
1966 - Stefan Edberg
1970 - Tim Foster