Humans have tracked time in one way or another in every civilization we have records of, writes physicist Chad Orzel. In his new book A Brief History of Timekeeping (BenBella Books, 2022), Orzel ...
Scientific American presents The Math Dude by Quick & Dirty Tips. Scientific American and Quick & Dirty Tips are both Macmillan companies. A math puzzle a day keeps your brain saying "Yay!" I know ...
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