The most important infrastructure we have is educated minds, says former Tunisian government minister Amel Karboul. Yet too often large investments go to more visible initiatives such as bridges and roads, when it's the minds of our children that will really create a brighter future. In this sharp talk, she shares actionable ideas to ensure that...

Robert Neuwirth, author of "Shadow Cities," finds the world's squatter sites -- where a billion people now make their homes -- to be thriving centers of ingenuity and innovation. He takes us on a tour.

Humans are no longer valued for our creativity, says media theorist Douglas Rushkoff -- in a world dominated by digital technology, we're now just valued for our data. In a passionate talk, Rushkoff urges us to stop using technology to optimize people for the market and start using it to build a future centered on our pre-digital values of conne...

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 solving social problems is to talk about them.

Two-thirds of the world may not have access to the latest smartphone, but local electronic shops are adept at fixing older tech using low-cost parts. Vinay Venkatraman explains his work in "technology crafts," through which a mobile phone, a lunchbox and a flashlight can become a digital projector for a village school, or an alarm clock and a m...

Rachel Sussman shows photographs of the world's oldest continuously living organisms -- from 2,000-year-old brain coral off Tobago's coast to an "underground forest" in South Africa that has lived since before the dawn of agriculture.

For the first time in history, the majority of American parents don't think their kids will be better off than they were. This shouldn't be a cause for alarm, says journalist Courtney E. Martin. Rather, it's an opportunity to define a new approach to work and family that emphasizes community and creativity. "The biggest danger is not failing to ...

Armed with a sense of humor and laypeople's terms, Nobel winner Murray Gell-Mann drops some knowledge on TEDsters about particle physics, asking questions like, Are elegant equations more likely to be right than inelegant ones?

"Ideas can and do change the world," says historian Rutger Bregman, sharing his case for a provocative one: guaranteed basic income. Learn more about the idea's 500-year history and a forgotten modern experiment where it actually worked -- and imagine how much energy and talent we would unleash if we got rid of poverty once and for all.

Chimpanzees are people too, you know. Ok, not exactly. But lawyer Steven Wise has spent the last 30 years working to change these animals' status from "things" to "persons." It's not a matter of legal semantics; as he describes in this fascinating talk, recognizing that animals like chimps have extraordinary cognitive capabilities and rethinking...

Adam Savage makes things and builds experiments, and he uses costumes to add humor, color and clarity to the stories he tells. Tracing his lifelong love of costumes -- from a childhood space helmet made of an ice cream tub to a No-Face costume he wore to Comic-Con -- Savage explores the world of cosplay and the meaning it creates for its communi...

In her talk, Ali Carr-Chellman pinpoints three reasons boys are tuning out of school in droves, and lays out her bold plan to re-engage them: bringing their culture into the classroom, with new rules that let boys be boys, and video games that teach as well as entertain.

Could the strange orbits of small, distant objects in our solar system lead us to a big discovery? Planetary astronomer Mike Brown proposes the existence of a new, giant planet lurking in the far reaches of our solar system -- and shows us how traces of its presence might already be staring us in the face.

When you stop comparing yourself to others, you can accomplish great things, says wheelchair athlete Dean Furness. He shares how, after losing the use of his legs in an accident, he discovered a powerful new mindset focused on redefining his "personal average" and getting better little by little.

Jakob Magolan is here to change your perception of organic chemistry. In an accessible talk packed with striking graphics, he teaches us the basics while breaking the stereotype that organic chemistry is something to be afraid of.

Robots and algorithms are getting good at jobs like building cars, writing articles, translating -- jobs that once required a human. So what will we humans do for work? Andrew McAfee walks through recent labor data to say: We ain't seen nothing yet. But then he steps back to look at big history, and comes up with a surprising view of what comes ...

Tobacco use remains the leading cause of preventable disease and death in the United States, killing more people each year than alcohol, AIDS, car accidents, illegal drugs, murder and suicide combined. Follow health policy expert Mitch Zeller into the murky depths of the tobacco industry as he details the sordid history of nicotine addiction -- ...

How do we solve the problem of the suburbs? Urbanist Jeff Speck shows how we can free ourselves from dependence on the car -- which he calls "a gas-belching, time-wasting, life-threatening prosthetic device" -- by making our cities more walkable and more pleasant for more people.

In 2009, 11,341 untested rape kits -- some dating back to the 1980s -- were found in an abandoned warehouse once used by the Detroit police to store evidence. When this scandal was uncovered, prosecutor Kym Worthy set a plan into action to get justice for the thousands of victims affected. In this powerful, eye-opening talk, Worthy explains how ...

James Cameron's big-budget (and even bigger-grossing) films create unreal worlds all their own. In this personal talk, he reveals his childhood fascination with the fantastic -- from reading science fiction to deep-sea diving -- and how it ultimately drove the success of his blockbuster hits "Aliens," "The Terminator," "Titanic" and "Avatar."

Peter Diamandis says it's our moral imperative to keep exploring space -- and he talks about how, with the X Prize and other incentives, we're going to do just that.

Investing in women can unlock infinite potential around the globe. But how can women walk the line between Western-style empowerment and traditional culture? Kavita Ramdas of the Global Fund for Women talks about three encounters with powerful women who fight to make the world better -- while preserving the traditions that sustain them.

Can we rebuild our broken suburbs? Ellen Dunham-Jones shares a vision of dying malls rehabilitated, dead "big box" stores re-inhabited, and endless parking lots transformed into thriving wetlands.

Convince just 100 key companies to go sustainable, and WWF's Jason Clay says global markets will shift to protect the planet our consumption has already outgrown. Hear how his extraordinary roundtables are getting big brand rivals to agree on green practices first -- before their products duke it out on store shelves.

How can we return to work without spurring a second surge of coronavirus infection? Biologist Uri Alon shares a thought-provoking strategy: four days at work followed by 10 days of lockdown, a cycle that would exploit a weakness in the virus's biology and potentially cut its reproductive rate to a manageable level. Learn more about this approach...

What does environmental devastation actually look like? At TEDxVictoria, photographer Garth Lenz shares shocking photos of the Alberta Tar Sands mining project -- and the beautiful (and vital) ecosystems under threat.

There's an astronaut saying: In space, “there is no problem so bad that you can’t make it worse.” So how do you deal with the complexity, the sheer pressure, of dealing with dangerous and scary situations? Retired colonel Chris Hadfield paints a vivid portrait of how to be prepared for the worst in space (and life) -- and it starts with walking ...

How can we measure what makes a school system work? Andreas Schleicher walks us through the PISA test, a global measurement that ranks countries against one another -- then uses that same data to help schools improve. Watch to find out where your country stacks up, and learn the single factor that makes some systems outperform others.

Five years ago, Roz Savage quit her high-powered London job to become an ocean rower. She's crossed the Atlantic solo, and just started the third leg of a Pacific solo row, the first for a woman. Why does she do it? Hear her reasons, both deeply personal and urgently activist.

What do you learn when you sail around the world on your own? When solo sailor Ellen MacArthur circled the globe – carrying everything she needed with her – she came back with new insight into the way the world works, as a place of interlocking cycles and finite resources, where the decisions we make today affect what's left for tomorrow. She pr...