Over 85 percent of all pancreatic cancers are diagnosed late, when someone has less than two percent chance of survival. How could this be? Jack Andraka talks about how he developed a promising early detection test for pancreatic cancer that's super cheap, effective and non-invasive -- all before his 16th birthday.

Can Twitter be saved? In a wide-ranging conversation with TED's Chris Anderson and Whitney Pennington Rodgers, Twitter CEO Jack Dorsey discusses the future of the platform -- acknowledging problems with harassment and moderation and proposing some fundamental changes that he hopes will encourage healthy, respectful conversations. "Are we actuall...

After witnessing the atrocities of his fellow man in World War II, William Golding was losing his faith in humanity. Later, during the Cold War, as superpowers began threatening one another with nuclear annihilation, he was forced to interrogate the very roots of human nature and violence. These musings would inspire his first novel: "Lord of th...

Elon Musk discusses his new project digging tunnels under LA, the latest from Tesla and SpaceX and his motivation for building a future on Mars in conversation with TED's Head Curator, Chris Anderson.

"I'm a capitalist. I believe in the system. I believe you can increase the size of the pie and you could divide it well," says Ray Dalio, founder of Bridgewater Associates. He offers wide-ranging insight and advice on how we might recover from the global economic fallout of the coronavirus crisis -- and use it as an opportunity to reform the sys...

In this special conversation, NYU marketing professor Scott Galloway and head of TED Chris Anderson dive deeper into Galloway’s explosive recent TED Talk, which has been seen by millions and ignited conversations about what he calls “the great intergenerational theft,” or how older generations are stealing prosperity from the young. With razor-s...

Like your uncle at a family party, the rumpled Swedish doctor Lennart Green says, "Pick a card, any card." But what he does with those cards is pure magic -- flabbergasting, lightning-fast, how-does-he-do-it? magic.

Pianist and composer Jennifer Lin gives a magical performance, talks about the process of creativity and improvises a moving solo piece based on a random sequence of notes.

In the year leading up to this talk, the web tool Twitter exploded in size (up 10x during 2008 alone). Co-founder Evan Williams reveals that many of the ideas driving that growth came from unexpected uses invented by the users themselves.

By making photographs that seem to show our favorite celebs (Diana, Elton John) doing what we really, secretly, want to see them doing, Alison Jackson explores our desire to get personal with celebs. Contains graphic images.

Democracy thrives on civil debate, Michael Sandel says -- but we're shamefully out of practice. He leads a fun refresher, with TEDsters sparring over a recent Supreme Court case (PGA Tour Inc. v. Martin) whose outcome reveals the critical ingredient in justice.

Technologist Kai-Fu Lee describes the high-stakes battle between the West and China in artificial intelligence, and what it means for the future of work. (Audio only)

In his speech, Jack shares his understanding of how ideas are never spontaneously created, but rather that it takes persistence through failure to reach a great idea. Jack provides a simple, four-step cycle of starting with your dreams, setting goals, taking action and then reflecting, that if followed for long enough can lead towards a great, w...

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