Square root days happen only a few times in a century, and the man who brought the day fame is celebrating his sixth one.

This background has given Gotlib a deep appreciation for the variety of Jewish life, and it is part of the reason he and some colleagues created the informal Rittenhouse Square Jewish community. In ...

Today is Cinco de Mayo. And this year, the fifth of May is filled with mathematical joy. It is — Square Root Day! It all started in 1981. "I was writing a check in late August," says Ron Gordon, who ...

The Kremlin said Tuesday that 29 "foreign leaders" were expected to attend the Red Square parade, including Jinping and Brazil's Luiz Inacio Lula de Silva. On the eve of Xi's arrival, Moscow said that ...