OK, Ari, what is 567 times 123? And you have exactly three seconds to answer, so you better move fast. SHAPIRO: You can't be serious right now, Juana. SUMMERS: (Laughter). SHAPIRO: There's no way ...

Long before calculators existed, civilisations across the globe developed ingenious mental calculation systems that could solve complex problems in seconds. These time-tested methods are experiencing ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. Mike Byster is one of the world’s fastest ...

I know many computer languages, but I’ve struggled all my life to learn a second human language. One of my problems is that I can’t stop trying to translate in my head. Just like Morse code, you need ...