NPR's Ailsa Chang speaks to mathematician Eugenia Cheng about the Pascaline -- a 17th-century invention credited as the first mechanical calculator.
Terms apply to American Express benefits and offers. Visit americanexpress.com to learn more. Information about the American Express® Green Card has been collected independently by CNBC Select and has ...
Erin is a former writer and assigning editor on the NerdWallet Content team who now heads NerdWallet's travel business. She's a credit card and travel rewards expert at NerdWallet, based in Baltimore, ...
September 24, 2025 • Ukrainian President Volodymyr Zelensky addresses the United Nations the day after President Trump reversed his position on the war with Russia, saying Ukraine could win back all ...
How many 'blue' phrases do you know? Learn three more here.
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