The debate over foreign aid often pits those who mistrust "charity" against those who mistrust reliance on the markets. Jacqueline Novogratz proposes a middle way she calls patient capital, with promising examples of entrepreneurial...

The smaller members of the felid family can purr, but why? Hank takes on this most adorable of life's mysteries in todays episode of SciShow.

Long before there were strip malls, skyscrapers, and combination Pizza Hut/Taco Bells, nature had its own architects: all kinds of creatures create all kinds of structures for living, raising offspring, or maybe just the occasional...

Computer skills aren't what's stopping people from breaking into the tech industry, says social entrepreneur Irma L. Olguin Jr. More often, the biggest hurdles are things like access to childcare, transportation and financial stability....

It's time to give paper passports a digital upgrade, says entrepreneur Karoli Hindriks. Looking to Estonia's technology-driven government for inspiration, she envisions a world where immigration is no longer hindered by bureaucracy and...

The James Webb Space Telescope is a miracle of modern science and engineering. With a 21-foot, gold-coated mirror protected by a sunshield that's the size of a tennis court, it's the world's most powerful telescope and humanity's latest...

Jacqueline Novogratz applauds the world's heightened interest in Africa and poverty, but argues persuasively for a new approach.

Join Jessi and Squeaks in their brand new fort as they answer letters from their friends in Ivydale, England!

Adam Grosser talks about a project to build a refrigerator that works without electricity -- to bring the vital tool to villages and clinics worldwide. Tweaking some old technology, he's come up with a system that works.

Hacking is about more than mischief-making or political subversion. As Catherine Bracy describes in this spirited talk, it can be just as much a force for good as it is for evil. She spins through some inspiring civically-minded projects...

We can all play a role in the climate movement by tapping into our skills, resources and networks in ways that bring us satisfaction, says climate leader Ayana Elizabeth Johnson. She suggests drawing a Venn diagram to map these...

At the Harbour School in Hong Kong, TED Senior Fellow Cesar Harada teaches citizen science and invention to the next generation of environmentalists. He's moved his classroom into an industrial mega-space where imaginative kids work with...

SciShow takes you inside a limnic eruption, a natural disaster that's as deadly as it is rare.

23 Reasons Science Gave Us to be Cheerful

At TED U, Gever Tulley, founder of the Tinkering School, spells out 5 dangerous things you should let your kids do -- and why a little danger is good for both kids and grownups.

Yochai Benkler explains how collaborative projects like Wikipedia and Linux represent the next stage of human organization.

There's no single formula for a great talk, but there is a secret ingredient that all the best ones have in common. TED curator Chris Anderson shares this secret -- along with four ways to make it work for you. Do you have what it takes...

As digital assets like cryptocurrency and NFTs become more mainstream, design thinker and head of Instagram Adam Mosseri believes that creators are uniquely positioned to benefit. These blockchain-enabled technologies could remove the...

Let’s try to help John Green Bot sound a bit more like the real John Green using Natural Language Processing. Today, we're going to code a program that takes a one word prompt and then completes the sentence that sounds like something...

In this captivating talk from the TED archive, cartoonist Ben Katchor reads from his comic strips. These perceptive, surreal stories find the profound hopes and foibles of history (and modern New York) preserved in objects like light...

Five Crazy Bridges for Animals

From bioprinting to growing organs in non-human animals, doctors and scientists are looking at different ways to make organ transplants a less challenging procedure.

What's the secret to unlocking the creativity hidden inside your daily work, and giving every great idea a chance? Harvard professor Linda Hill, co-author of "Collective Genius," has studied some of the world's most creative companies to...

In the United States, it's estimated that 30 percent of adults and 66 percent of adolescents are regularly sleep-deprived. This isn't just a minor inconvenience: staying awake can cause serious bodily harm. Claudia Aguirre shows what...