Mathemagician Arthur Benjamin races a team of calculators to figure out 3-digit squares, solves another massive mental equation and guesses a few birthdays. How does he do it? He’ll tell you.

Published on Jun 2, 2015Including a flow chart on how to stop unwanted texts from people you don't know.

306 degrees in a circle? Check out these crazy relationships.

Published on Jul 6, 2012Sometimes infinity is even bigger than you think... Dr James Grime explains with a little help from Georg Cantor.

This gal is great. Sometimes I have to stop and rewind but her thinking is mesmerizing!

A-rhythm-atic!
Ready to dance in your seat? Drummer Clayton Cameron breaks down different genres of music—from R&B to Latin to pop—by their beats. A talk that proves hip hop and jazz aren't cooler than math—they simply rely on it.

Published on May 8, 2014

Web cartoonist Randall Munroe answers simple what-if questions ("what if you hit a baseball moving at the speed of light?") using math, physics, logic and deadpan humor. In this charming talk, a reader's question about Google's data warehouse leads Munroe down a circuitous path to a hilariously over-detailed answer — in which, shhh, you might actually learn something.