TED Talk

March 19, 2019
How hip-hop helps us understand science | Danielle N. Lee

How hip-hop helps us understand science | Danielle N. Lee

In the early 1990s, a scandal rocked evolutionary biology: scientists discovered that songbirds -- once thought to be strictly monogamous -- engaged in what's politely called "extra-pair copulation." In this unforgettable biology lesson on animal infidelity, TED Fellow Danielle N....

Inside the black hole image that made history | Sheperd Doeleman

Inside the black hole image that made history | Sheperd Doeleman

At the center of a galaxy more than 55 million light-years away, there's a supermassive black hole with the mass of several billion suns. And now, for the first time ever, we can see it. Astrophysicist Sheperd Doeleman, head of the Event Horizon Telescope collaboration, speaks with TED's...

How Twitter needs to change | Jack Dorsey

How Twitter needs to change | Jack Dorsey

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...

Facebook's role in Brexit -- and the threat to democracy | Carole Cadwalladr

Facebook's role in Brexit -- and the threat to democracy | Carole Cadwalladr

In an unmissable talk, journalist Carole Cadwalladr digs into one of the most perplexing events in recent times: the UK's super-close 2016 vote to leave the European Union. Tracking the result to a barrage of misleading Facebook ads targeted at vulnerable Brexit swing voters -- and linking the...

The artificial muscles that will power robots of the future | Christoph Keplinger

The artificial muscles that will power robots of the future | Christoph Keplinger

Robot brains are getting smarter and smarter, but their bodies are often still clunky and unwieldy. Mechanical engineer Christoph Keplinger is designing a new generation of soft, agile robot inspired by a masterpiece of evolution: biological muscle. See these "artificial muscles" expand...

Empower a girl, transform a community | Kakenya Ntaiya

Empower a girl, transform a community | Kakenya Ntaiya

Kakenya Ntaiya turned her dream of getting an education into a movement to empower vulnerable girls and bring an end to harmful traditional practices in Kenya. Meet two students at the Kakenya Center for Excellence, a school where girls can live and study safely -- and uplift their community along...

3 lessons on starting a movement from a self-defense trailblazer | Rana Abdelhamid

3 lessons on starting a movement from a self-defense trailblazer | Rana Abdelhamid

At 16, Rana Abdelhamid started teaching self-defense to women and girls in her neighborhood. Almost 10 years later, these community classes have grown into Malikah: a global grassroots network creating safety, power and solidarity for all women. How did she do it? Abdelhamid shares three...

How risk-taking changes a teenager's brain | Kashfia Rahman

How risk-taking changes a teenager's brain | Kashfia Rahman

Why do teenagers sometimes make outrageous, risky choices? Do they suddenly become reckless, or are they just going through a natural phase? To find out, Kashfia Rahman -- winner of the Intel International Science and Engineering Fair (and a Harvard freshman) -- designed and conducted an experiment...

Wearable tech that helps you navigate by touch | Keith Kirkland

Wearable tech that helps you navigate by touch | Keith Kirkland

Keith Kirkland is developing wearable tech that communicates information using only the sense of touch. He's trying to figure out: What gestures and vibration patterns could intuitively communicate ideas like "stop" or "go"? Check out his team's first product, a...

We don't "move on" from grief. We move forward with it | Nora McInerny

We don't "move on" from grief. We move forward with it | Nora McInerny

In a talk that's by turns heartbreaking and hilarious, writer and podcaster Nora McInerny shares her hard-earned wisdom about life and death. Her candid approach to something that will, let's face it, affect us all, is as liberating as it is gut-wrenching. Most powerfully, she encourages...

How to lead a conversation between people who disagree | Eve Pearlman

How to lead a conversation between people who disagree | Eve Pearlman

In a world deeply divided, how do we have hard conversations with nuance, curiosity, respect? Veteran reporter Eve Pearlman introduces "dialogue journalism": a project where journalists go to the heart of social and political divides to support discussions between people who disagree. See...

An AI smartwatch that detects seizures | Rosalind Picard

An AI smartwatch that detects seizures | Rosalind Picard

Every year worldwide, more than 50,000 otherwise healthy people with epilepsy suddenly die -- a condition known as SUDEP. These deaths may be largely preventable, says AI researcher Rosalind Picard. Learn how Picard helped develop a cutting-edge smartwatch that can detect epileptic seizures before...

What refugees need to start new lives | Muhammed Idris

What refugees need to start new lives | Muhammed Idris

Every minute, 20 people are newly displaced by climate change, economic crisis and political instability, according to the UNHCR. How can we help them overcome the barriers to starting new lives? TED Resident Muhammed Idris is leading a team of technologists, researchers and refugees to develop...

Public art that turns cities into playgrounds of the imagination | Helen Marriage

Public art that turns cities into playgrounds of the imagination | Helen Marriage

Visual artist Helen Marriage stages astonishing, large-scale public art events that expand the boundaries of what's possible. In this visual tour of her work, she tells the story of three cities she transformed into playgrounds of the imagination -- picture London with a giant mechanical...

How does income affect childhood brain development? | Kimberly Noble

How does income affect childhood brain development? | Kimberly Noble

Neuroscientist and pediatrician Kimberly Noble is leading the Baby's First Years study: the first-ever randomized study of how family income changes children's cognitive, emotional and brain development. She and a team of economists and policy experts are working together to find out: Can...

How centuries of sci-fi sparked spaceflight | Alexander MacDonald

How centuries of sci-fi sparked spaceflight | Alexander MacDonald

Long before we had rocket scientists, the idea of spaceflight traveled from mind to mind across generations. With great visuals, TED Fellow and NASA economist Alexander MacDonald shows how 300 years of sci-fi tales -- from Edgar Allan Poe to Jules Verne to H.G. Wells and beyond -- sparked a culture...

Can we regenerate heart muscle with stem cells? | Chuck Murry

Can we regenerate heart muscle with stem cells? | Chuck Murry

The heart is one of the least regenerative organs in the human body -- a big factor in making heart failure the number one killer worldwide. What if we could help heart muscle regenerate after injury? Physician and scientist Chuck Murry shares his groundbreaking research into using stem cells to...

"East Virginia" / "John Brown's Dream" | Nora Brown

"East Virginia" / "John Brown's Dream" | Nora Brown

In a mesmerizing set, musician Nora Brown breathes new life into two old-time banjo tunes: "East Virginia" and "John Brown's Dream." An evocative performance paired with a quick history of the banjo's evolution.

A short history of trans people's long fight for equality | Samy Nour Younes

A short history of trans people's long fight for equality | Samy Nour Younes

Transgender activist and TED Resident Samy Nour Younes shares the remarkable, centuries-old history of the trans community, filled with courageous stories, inspiring triumphs -- and a fight for civil rights that's been raging for a long time. "Imagine how the conversation would shift if...

To detect diseases earlier, let's speak bacteria's secret language | Fatima AlZahra'a Alatraktchi

To detect diseases earlier, let's speak bacteria's secret language | Fatima AlZahra'a Alatraktchi

Bacteria "talk" to each other, sending chemical information to coordinate attacks. What if we could listen to what they were saying? Nanophysicist Fatima AlZahra'a Alatraktchi invented a tool to spy on bacterial chatter and translate their secret communication into human language....

A new class of drug that could prevent depression and PTSD | Rebecca Brachman

A new class of drug that could prevent depression and PTSD | Rebecca Brachman

Current treatments for depression and PTSD only suppress symptoms, if they work at all. What if we could prevent these diseases from developing altogether? Neuroscientist and TED Fellow Rebecca Brachman shares the story of her team's accidental discovery of a new class of drug that, for the...

What it's like to have Tourette's -- and how music gives me back control | Esha Alwani

What it's like to have Tourette's -- and how music gives me back control | Esha Alwani

Esha Alwani began writing songs when she was six years old, shortly after being diagnosed with Tourette syndrome. And she noticed something amazing: whenever she played music, her involuntary tics suddenly went away. Listen along as Alwani explores the power of music and delights the audience with...

The beautiful future of solar power | Marjan van Aubel

The beautiful future of solar power | Marjan van Aubel

The Sun delivers more energy to Earth in one hour than all of humanity uses in an entire year. How can we make this power more accessible to everyone, everywhere? Solar designer Marjan van Aubel shows how she's turning everyday objects like tabletops and stained glass windows into elegant...

Creative ways to get kids to thrive in school | Olympia Della Flora

Creative ways to get kids to thrive in school | Olympia Della Flora

To get young kids to thrive in school, we need to do more than teach them how to read and write -- we need to teach them how to manage their emotions, says educator Olympia Della Flora. In this practical talk, she shares creative tactics she used to help struggling, sometimes disruptive students --...

How you can help save the bees, one hive at a time | Noah Wilson-Rich

How you can help save the bees, one hive at a time | Noah Wilson-Rich

Bees are dying off in record numbers, but ecologist Noah Wilson-Rich is interested in something else: Where are bees healthy and thriving? To find out, he recruited citizen scientists across the US to set up beehives in their backyards, gardens and rooftops. Learn how these little data factories...

Why I turned Chicago's abandoned homes into art | Amanda Williams

Why I turned Chicago's abandoned homes into art | Amanda Williams

Amanda Williams shares her lifelong fascination with the complexity of color: from her experiences with race and redlining to her discovery of color theory to her work as a visual artist. Journey with Williams to Chicago's South Side and explore "Color(ed) Theory," a two-year art...

The secret to scientific discoveries? Making mistakes | Phil Plait

The secret to scientific discoveries? Making mistakes | Phil Plait

Phil Plait was on a Hubble Space Telescope team of astronomers who thought they may have captured the first direct photo of an exoplanet ever taken. But did the evidence actually support that? Follow along as Plait shows how science progresses -- through a robust amount of making and correcting...

How to keep human bias out of AI | Kriti Sharma

How to keep human bias out of AI | Kriti Sharma

AI algorithms make important decisions about you all the time -- like how much you should pay for car insurance or whether or not you get that job interview. But what happens when these machines are built with human bias coded into their systems? Technologist Kriti Sharma explores how the lack of...

"My Man" / "Bohanna" / "We Dance" |  Crush Club

"My Man" / "Bohanna" / "We Dance" | Crush Club

Indie pop duo Crush Club and singer Nicki B bring their blend of funk, house and Latin styles to the TED stage, performing three songs: "My Man," "Bohanna" and "We Dance."

Our dangerous obsession with perfectionism is getting worse | Thomas Curran

Our dangerous obsession with perfectionism is getting worse | Thomas Curran

Social psychologist Thomas Curran explores how the pressure to be perfect -- in our social media feeds, in school, at work -- is driving a rise in mental illness, especially among young people. Learn more about the causes of this phenomenon and how we can create a culture that celebrates the joys...

Where did the Moon come from? A new theory | Sarah T. Stewart

Where did the Moon come from? A new theory | Sarah T. Stewart

The Earth and Moon are like identical twins, made up of the exact same materials -- which is really strange, since no other celestial bodies we know of share this kind of chemical relationship. What's responsible for this special connection? Looking for an answer, planetary scientist and...

What happens in your throat when you beatbox? | Tom Thum and Matthew Broadhurst

What happens in your throat when you beatbox? | Tom Thum and Matthew Broadhurst

Viral beatboxer Tom Thum has an orchestra in his mouth, but how does he make all those sounds? Get an up-close-and-personal look as laryngeal surgeon Matthew Broadhurst sticks a camera down Thum's throat while he creates a mind-boggling array of noises. This hilarious, somewhat...

The "dementia village" that's redefining elder care | Yvonne van Amerongen

The "dementia village" that's redefining elder care | Yvonne van Amerongen

How would you prefer to spend the last years of your life: in a sterile, hospital-like institution or in a village with a supermarket, pub, theater and park within easy walking distance? The answer seems obvious now, but when Yvonne van Amerongen helped develop the groundbreaking Hogeweyk dementia...

An unexpected tool for understanding inequality: abstract math | Eugenia Cheng

An unexpected tool for understanding inequality: abstract math | Eugenia Cheng

How do we make sense of a world that doesn't? By looking in unexpected places, says mathematician Eugenia Cheng. She explains how applying concepts from abstract mathematics to daily life can lead us to a deeper understanding of things like the root of anger and the function of privilege....

The most powerful woman you've never heard of | T. Morgan Dixon and Vanessa Garrison

The most powerful woman you've never heard of | T. Morgan Dixon and Vanessa Garrison

Everyone's heard of Martin Luther King Jr. But do you know the woman Dr. King called "the architect of the civil rights movement," Septima Clark? The teacher of some of the generation's most legendary activists -- like Rosa Parks, Diane Nash, Fannie Lou Hamer and thousands more...

How we can store digital data in DNA | Dina Zielinski

How we can store digital data in DNA | Dina Zielinski

From floppy disks to thumb drives, every method of storing data eventually becomes obsolete. What if we could find a way to store all the world's data forever? Bioinformatician Dina Zielinski shares the science behind a solution that's been around for a few billion years: DNA.

A bold idea to replace politicians | César Hidalgo

A bold idea to replace politicians | César Hidalgo

César Hidalgo has a radical suggestion for fixing our broken political system: automate it! In this provocative talk, he outlines a bold idea to bypass politicians by empowering citizens to create personalized AI representatives that participate directly in democratic decisions. Explore a new way...

How I'm making bricks out of ashes and rubble in Gaza | Majd Mashharawi

How I'm making bricks out of ashes and rubble in Gaza | Majd Mashharawi

Majd Mashharawi was walking through her war-torn neighborhood in Gaza when an idea flashed in her mind: What if she could take the rubble and transform it into building materials? See how she designed a brick made out of ashes that's helping people rebuild their homes -- and learn about her...

How a new species of ancestors is changing our theory of human evolution | Juliet Brophy

How a new species of ancestors is changing our theory of human evolution | Juliet Brophy

In 2013, a treasure trove of unusual fossils were uncovered in a cave in South Africa, and researchers soon realized: these were the remains of a new species of ancient humans. Paleoanthropologist Juliet Brophy takes us inside the discovery of Homo naledi, explaining how this mysterious ancestor is...

Is your country at risk of becoming a dictatorship? Here's how to know | Farida Nabourema

Is your country at risk of becoming a dictatorship? Here's how to know | Farida Nabourema

Farida Nabourema has dedicated her life to fighting the military regime in Togo, Africa's oldest autocracy. She's learned two truths along the way: no country is destined to be oppressed -- and no country is immune to dictatorship. But how can you tell if you're at risk before it...

The self-assembling computer chips of the future | Karl Skjonnemand

The self-assembling computer chips of the future | Karl Skjonnemand

The transistors that power the phone in your pocket are unimaginably small: you can fit more than 3,000 of them across the width of a human hair. But to keep up with innovations in fields like facial recognition and augmented reality, we need to pack even more computing power into our computer...

A juror's reflections on the death penalty | Lindy Lou Isonhood

A juror's reflections on the death penalty | Lindy Lou Isonhood

Lindy Lou Isonhood grew up in a town where the death penalty was a fact of life, part of the unspoken culture. But after she served as a juror in a capital murder trial -- and voted "yes" to sentencing a guilty man to death -- something inside her changed. In this engaging and personal...

An architect's subversive reimagining of the US-Mexico border wall | Ronald Rael

An architect's subversive reimagining of the US-Mexico border wall | Ronald Rael

What is a border? It's a line on a map, a place where cultures mix and merge in beautiful, sometimes violent and occasionally ridiculous ways. And a border wall? An overly simplistic response to that complexity, says architect Ronald Rael. In a moving, visual talk, Rael reimagines the physical...

How to overcome apathy and find your power | Dolores Huerta

How to overcome apathy and find your power | Dolores Huerta

"Sí, se puede!" -- "Yes, we can!" It's the rallying cry Dolores Huerta came up with as a young activist in the 1970s, and she's lived by it in her tireless pursuit of civil rights ever since. With her signature wit and humor, Huerta reflects on her life's work,...

How education helped me rewrite my life | Ashweetha Shetty

How education helped me rewrite my life | Ashweetha Shetty

There's no greater freedom than finding your purpose, says education advocate Ashweetha Shetty. Born to a poor family in rural India, Shetty didn't let the social norms of her community stifle her dreams and silence her voice. In this personal talk, she shares how she found self-worth...

How to teach kids to talk about taboo topics | Liz Kleinrock

How to teach kids to talk about taboo topics | Liz Kleinrock

When one of Liz Kleinrock's fourth-grade students said the unthinkable at the start of a class on race, she knew it was far too important a teachable moment to miss. But where to start? Learn how Kleinrock teaches kids to discuss taboo topics without fear -- because the best way to start...

What if all US health care costs were transparent? | Jeanne Pinder

What if all US health care costs were transparent? | Jeanne Pinder

In the US, the very same blood test can cost $19 at one clinic and $522 at another clinic just blocks away -- and nobody knows the difference until they get a bill weeks later. Journalist Jeanne Pinder says it doesn't have to be this way. She's built a platform that crowdsources the true...

What is the meaning of work? | Roy Bahat and Bryn Freedman

What is the meaning of work? | Roy Bahat and Bryn Freedman

Roy Bahat was worried. His company invests in new technology like AI to make businesses more efficient -- but, he wondered, what was AI doing to the people whose jobs might change, go away or become less fulfilling? The question sent him on a two-year research odyssey to discover what motivates...

The age of genetic wonder | Juan Enriquez

The age of genetic wonder | Juan Enriquez

Gene-editing tools like CRISPR enable us to program life at its most fundamental level. But this raises some pressing questions: If we can generate new species from scratch, what should we build? Should we redesign humanity as we know it? Juan Enriquez forecasts the possible futures of genetic...

A love story about the power of art as organizing | Aja Monet and phillip agnew

A love story about the power of art as organizing | Aja Monet and phillip agnew

In a lyrical talk full of radical imagination, poet Aja Monet and community organizer phillip agnew share the story of how they fell in love and what they've learned about the powerful connection between great social movements and meaningful art. Journey to Smoke Signals Studio in Miami, their...

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