"Venus is too hot, Mars is too cold, and Earth is just right," says planetary scientist Dave Brain. But why? In this pleasantly humorous talk, Brain explores the fascinating science behind what it takes for a planet to host life -- and why humanity may just be in the right place at the right time when it comes to the timeline of life-sustaining ...

It's time to invest in face-to-face training that empowers employees to have difficult conversations, says Tamekia MizLadi Smith. In a witty, provocative talk, Smith shares a workplace training program called "I'm G.R.A.C.E.D." that will inspire bosses and employees alike to communicate with compassion and respect. Bottom line: always let people...

Could visual illusions be a cure for polarization? (Credits: Director of Photography: William Atherton; Production Design: Adam Pruitt; Creative Partner: SpecialGuest; Production company: 1stAveMachine; Producers: Dave Kornfield, Andrew Geller, Matt Snetzko; Music: Bryn Bliska; Executive Producer, TED2018 Film Program: Sinéad McDevitt; Director ...

Each year in the United States, players of sports and recreational activities receive between 2.5 and 4 million concussions. How dangerous are all those concussions? The answer is complicated and lies in how the brain responds when something strikes it. Clifford Robbins explains the science behind concussions. [Directed by Rémi Cans, narrated by...

Something strange and deadly is happening inside the brains of top athletes -- a degenerative condition, possibly linked to concussions, that causes dementia, psychosis and far-too-early death. It's called chronic traumatic encephalopathy, or CTE, and it's the medical mystery that Chris Nowinski wants to solve by analyzing brains after death. It...

What do science and play have in common? Neuroscientist Beau Lotto thinks all people (kids included) should participate in science and, through the process of discovery, change perceptions. He's seconded by 12-year-old Amy O'Toole, who, along with 25 of her classmates, published the first peer-reviewed article by schoolchildren, about the Blacka...

Designers spend their days dreaming up better products and better worlds, and you can use their thinking to re-envision your own life, says design professor Bill Burnett. He shares five tips to try, whether you're at the start of your career or contemplating your next act.

We've all answered our share of cringeworthy interview questions -- and watched managers pick the wrong person while rejecting the right one. Is it time to delegate hiring decisions to algorithms? Find out what the experts recommend, and meet a pair of leaders who have reimagined the interview process by ignoring credentials and refusing to look...

Remember the Ice Bucket Challenge craze this summer? Meet the mom who started it all. When Nancy Frates's son Pete hurt his wrist in a baseball game, he got an unexpected diagnosis: it wasn’t a broken bone, it was ALS, and there is no cure. In this inspiring talk, Nancy tells the story of what happened next.

Outside.in's Steven Johnson says the Web is like a city: built by many people, completely controlled by no one, intricately interconnected and yet functioning as many independent parts. While disaster strikes in one place, elsewhere, life goes on.

Bartenders need to know your age, retailers need your PIN, but almost no one actually needs your name -- except for identity thieves. ID expert David Birch proposes a safer approach to personal identification -- a "fractured" approach -- that would almost never require your real name.

After losing her mother in a house fire when she was just six years old, Danielle Torley saw two paths before her: a life full of fear, or one that promised healing and recovery. In this inspiring talk, she describes how she turned her grief into beauty in a most unexpected way -- by dancing with fire.

As machines take on more jobs, many find themselves out of work or with raises indefinitely postponed. Is this the end of growth? No, says Erik Brynjolfsson -- it’s simply the growing pains of a radically reorganized economy. A riveting case for why big innovations are ahead of us … if we think of computers as our teammates. Be sure to watch the...

Designer Jared Ficklin creates wild visualizations that let us see music, using color and even fire (a first for the TED stage) to analyze how sound makes us feel. He takes a brief digression to analyze the sound of a skatepark -- and how audio can clue us in to developing creativity.

Novelist Amy Tan digs deep into the creative process, looking for hints of how hers evolved.

Break down the oil slick, keep it off the shores: that's grounds for pumping toxic dispersant into the Gulf, say clean-up overseers. Susan Shaw shows evidence it's sparing some beaches only at devastating cost to the health of the deep sea.

After performing comedy bits at a friend's cabin, Dave Brown saw his own jokes performed on TV by someone who had been at the cabin. Inspired to write his Master of Fine Arts thesis on joke-theft in stand-up comedy, Dave argues existing copyright laws must be changed to better protect comedians' work. Joke theft should be taken as seriously as...