Math is full of symbols: lines, dots, arrows, English letters, Greek letters, superscripts, subscripts ... it can look like an illegible jumble. Where did all of these symbols come from? John David Walters shares the origins of mathematical symbols, and illuminates why they’re still so important in the field today. [Directed by Chris Bishop, nar...

It can be easy to believe that humans are insignificant. We're specks of dust on a random planet in a vast universe. Less powerful than elephants. Fewer than ants. But David Deutsch believes that's all beside the point, because humans possess one unique skill: attaining knowledge. David Deutsch -- Oxford professor, father of quantum computing, r...

Was 2017 really the "the worst ever," as some would have us believe? Cognitive psychologist and linguist Steven Pinker shares data that shows: actually, it was one of the best overall. At TED2018, head of TED Chris Anderson sat down with Steven to take a closer look at the data that suggest the world is improving -- and to unpack why so many peo...

Talking about race can be difficult. But Mellody Hobson argues that we need to do it anyway -- boldly and often. Mellody is the president of Ariel Investments, a firm that manages more than 13 billion dollars. And throughout her career and in her personal life, she's experienced just how corrosive it can be when people choose to be "color blind....

Just after 9/11, Dalia Mogahed asked: What do 1.8 billion Muslims really think? In a grand research project with Gallup, she interviewed more than 50,000 Muslims about their lives, their dreams and the state of their religion. Today, she continues her research on Muslims as the director of research at the Institute for Social Policy and Understa...