A customer inspired the creation of this tanto-bladed knife with a selection of knife designs. This video showcases the knife and the design process behind it. #KnifeDesign #TantoKnife ...

NPR's Ailsa Chang speaks to mathematician Eugenia Cheng about the Pascaline -- a 17th-century invention credited as the first mechanical calculator.

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Melissa Quinn is a politics reporter for CBSNews.com. She has written for outlets including the Washington Examiner, Daily Signal and Alexandria Times. Melissa covers U.S. politics, with a focus on ...