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 ...
US Tests the World’s Largest $200 Million Drone: Meet the RQ-4 Global Hawk Why oil is tumbling and stocks are rising after Iran launched missiles at US bases See images from the Rubin telescope and ...