I started teaching in 1977, and across my nearly 50 years, I noticed that students were always interested in the history of ...

Unlike Roman, Maya or Iñupiaq numerals, this isn’t a total reimagining of numbers. Instead, it’s an uncanny parallel universe. Any number without zeros retains its old appearance (1,776 is still 1,776 ...

A street sign for Wall Street is seen outside the New York Stock Exchange (NYSE) in New York City, New York, U.S., July 19, 2021. REUTERS/Andrew Kelly/File Photo All three U.S. stock indexes fell ...