TED Talks Daily (HD video) | Listen Free on Castbox.

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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. Lee shows how she uses hip-hop to teach science, leading the crowd in an updated version of Naughty by Nature's hit "O.P.P."

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

2019-04-1900:08:16

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 Chris Anderson about the iconic, first-ever image of a black hole -- and the epic, worldwide effort involved in capturing it.

Inside the black hole image that made history | Sheperd Doeleman

2019-04-1800:11:29

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 actually delivering something that people value every single day?" Dorsey asks.

How Twitter needs to change | Jack Dorsey

2019-04-1700:25:47

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 same players and tactics to the 2016 US presidential election -- Cadwalladr calls out the "gods of Silicon Valley" for being on the wrong side of history and asks: Are free and fair elections a thing of the past?

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

2019-04-1600:15:15

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 and contract like the real thing and reach superhuman speeds -- and learn how they could power prosthetics that are stronger and more efficient than human limbs.

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

2019-04-1600:10:54

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 the way. "When you empower a girl, you transform a community," Ntaiya says.

Empower a girl, transform a community | Kakenya Ntaiya

2019-04-1500:12:31

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 ingredients for building a movement from the ground up.

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

2019-04-1200:11:11

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 to test how high school students respond to and get used to risk, and how it changes their still-developing brains. What she discovered about risk and decision-making could change how we think about why teens do what they do.

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

2019-04-1100:11:392

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 navigation device for the blind and visually impaired, and learn more about the entirely new "haptic language" he's creating to power it.

Wearable tech that helps you navigate by touch | Keith Kirkland

2019-04-1000:06:211

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 us to shift how we approach grief. "A grieving person is going to laugh again and smile again," she says. "They're going to move forward. But that doesn't mean that they've moved on."

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

2019-04-0900:15:051

Comments (17)

lupica claudio

amazing

Apr 6th

simply... amazing

Kamille Verde

The struggle is real.

Apr 2nd

ara Io

This is so sad ):

Nov 30th

Nuage Laboratoire

ara Io text

Mar 6th

Indranil Baruah

Why the size of this ~14 minutes audio is 94 MB?

Nov 15th

Es-sadim السديم

Indranil Baruah cuz it's video not audio

Jan 22nd

David Wil

thanks I feel like I'm being raped all over again

Nov 9th

Hyojae Park

I enjoyed this TED Talk.

Oct 16th

Sarah

Thanks Benjamin for this pic. It's really very pretty

May 12th

Angela C.

neat!

Apr 23rd

awesome speech!

Apr 10th

Absolutely brilliant speech! 👏👏

Dinesh kumar

it doesnt maximise fully

iTunes User

A big downside to this HD podcast is you can only watch it on your computer or iPod, but not your TV. I don't know what the TED people are doing when they're encoding it, but it will not play on Apple TV. You only get a green blinking screen and a distorted image (but perfect audio). I have two other friends with Apple TVs and they have the same problem viewing this podcast, so it's not just something wrong with my setup. I hope the TED people see this review, try to pull up their own podcast on an Apple TV and see what I'm talking about...and then fix it.

Aug 30th

This is a fantastic podcast. I've watched the conventional video feed for ages. Tried to download the HD version, and while it plays fine on my iMac, the video feed it won't play on Apple TV. I can hear it, but the picture is a mess. Even the standard video feed is great though. It's exceptional.

I love these TED videos. For you iPhone users complaining that the HD version won't sync to your iPhone, you need to look for the "TEDTalks (video)" podcast, not this HD podcast.