What if we could harness the sticking powers of sea creatures like mussels, oysters and barnacles, which refuse to budge even on wet, stormy coastlines? Dive into the wonderful world of animals that make their own glue and cement with scientist Jonathan Wilker -- and preview some of the amazing things we can learn from how they do it.

Neuroscientist Daniel Wolpert starts from a surprising premise: the brain evolved, not to think or feel, but to control movement. In this entertaining, data-rich talk he gives us a glimpse into how the brain creates the grace and agility of human motion.

Every day, in a city the size of London, 30 million meals are served. But where does all the food come from? Architect Carolyn Steel discusses the daily miracle of feeding a city, and shows how ancient food routes shaped the modern world.

Worldwide, violence is on the decline, but in the crowded cities of the global south — cities like Aleppo, Bamako and Caracas — violence is actually accelerating, fueled by the drug trade, mass unemployment and civil unrest. Security researcher Robert Muggah turns our attention toward these "fragile cities," super-fast-growing places where infra...

When tech journalist Madhumita Murgia began researching data brokers -- companies that collect and sell individuals' personal data -- she wasn't remotely prepared for the deep, dark rabbit hole she was about to descend into. Online anonymity is dead, your smart TV is spying on you, and private companies know what Star Wars memorabilia you're loo...

Have you ever actually read the terms and conditions for the apps you use? Finn Lützow-Holm Myrstad and his team at the Norwegian Consumer Council have, and it took them nearly a day and a half to read the terms of all the apps on an average phone. In a talk about the alarming ways tech companies deceive their users, Myrstad shares insights abou...

Financial literacy isn't a skill -- it's a lifestyle. Take it from Curtis "Wall Street" Carroll. As an incarcerated individual, Carroll knows the power of a dollar. While in prison, he taught himself how to read and trade stocks, and now he shares a simple, powerful message: we all need to be more savvy with our money.

We currently have enough fossil fuels to progressively transition off of them, says climate campaigner Tzeporah Berman, but the industry continues to expand oil, gas and coal production and exploration. With searing passion and unflinching nerve, Berman reveals the delusions keeping true progress from being made -- and offers a realistic path fo...

Where did all the lumps and bumps on buildings go? When did city architecture become so ... dull? Here to talk about why cities need inspiring architecture, designer Thomas Heatherwick offers a path out of the doldrums of urban monotony -- and a vision of cities filled with soulful buildings that people cherish for centuries.

Over the past few centuries, Western cultures have been very good at creating general prosperity for themselves. Historian Niall Ferguson asks: Why the West, and less so the rest? He suggests half a dozen big ideas from Western culture -- call them the 6 killer apps -- that promote wealth, stability and innovation. And in this new century, he sa...

Why do we make poor decisions that we know are bad for our health? In this frank, funny talk, behavioral economist and health policy expert David Asch explains why our behavior is often irrational -- in highly predictable ways -- and shows how we can harness this irrationality to make better decisions and improve our health care system overall.

Climate change is unfair. While rich countries can fight against rising oceans and dying farm fields, poor people around the world are already having their lives upended -- and their human rights threatened -- by killer storms, starvation and the loss of their own lands. Mary Robinson asks us to join the movement for worldwide climate justice.

Scaremongers play on the idea that robots will simply replace people on the job. In fact, they can become our essential collaborators, freeing us up to spend time on less mundane and mechanical challenges. Rodney Brooks points out how valuable this could be as the number of working-age adults drops and the number of retirees swells. He introduce...

How do we grasp the individual humanity of millions of displaced people? Artist, author and photographer Brian Sokol has been trying to do this from behind a lens, documenting refugee camps and engaging with people who live in them. He shares how disrupting incomplete narratives and letting refugees tell their own stories changed his own preconc...

If you: do laundry, are (or have been) pregnant, tidy up, shop for your household or do similar labor, then by GDP standards, you're unproductive. In this visionary talk, economist Marilyn Waring seeks to correct the failures of this narrow-minded system, detailing why we deserve a better way to measure growth that values not just our own liveli...

(NOTE: Statements in this talk have been challenged by scientists working in this field. Please read "Criticisms & Updates" below for more details.) "Desertification is a fancy word for land that is turning to desert," begins Allan Savory in this quietly powerful talk. And it's happening to about two-thirds of the world's grasslands, acceler...

Millennials are now the largest, most diverse adult population in the US -- but far too often, they're reduced to the worn-out stereotype of lazy, entitled avocado toast lovers, says author Reniqua Allen. In this revealing talk, she shares overlooked stories of millennials of color, offering a broader, more nuanced view of the generation. "Mille...

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. In this visionary talk, Olguin Jr. introduces the work she's done to uplift and empower people in her communit...

Oklahoma City is a midsized town that had a big problem: It was among the most obese towns in America. Mayor Mick Cornett realized that, to make his city a great place to work and live, it had to become healthier too. In this charming talk, he walks us through the interlocking changes that helped OKC drop a collective million pounds (450,000 kil...

Model and activist Nyle DiMarco -- who was born deaf -- is often asked whether he wishes he could hear. His answer? "I've never wished that because I love who I am." In this personal talk, he emphasizes the connection between education and self esteem, arguing why we need more accessible education for the deaf.

A pioneer in research on play, Dr. Stuart Brown says humor, games, roughhousing, flirtation and fantasy are more than just fun. Plenty of play in childhood makes for happy, smart adults -- and keeping it up can make us smarter at any age.

Can playing video games make you more productive? Gabe Zichermann shows how games are making kids better problem-solvers, and will make us better at everything from driving to multi-tasking.

Why is Al Gore optimistic about climate change? In this spirited talk, Gore asks three powerful questions about the man-made forces threatening to destroy our planet -- and the solutions we're designing to combat them. (Featuring Q&A with TED curator Chris Anderson)

Can we use our brains to directly control machines? Miguel Nicolelis suggests yes, showing how a clever monkey in the US learned to control a robot arm in Japan purely with its thoughts. The research has big implications for quadraplegic people -- and in fact, it powered the exoskeleton that kicked off the 2014 World Cup.

Building a skyscraper? Forget about steel and concrete, says architect Michael Green, and build it out of … wood. As he details in this intriguing talk, it's not only possible to build safe wooden structures up to 30 stories tall (and, he hopes, higher), it's necessary.

Have you ever wondered how your ears work? In this delightful and fascinating talk, biophysicist Jim Hudspeth demonstrates the wonderfully simple yet astonishingly powerful mechanics of hair cells, the microscopic powerhouses that make hearing possible -- and explains how, when it's really quiet, your ears will begin to beam out a spectrum of so...

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.

For the dawn of a new decade, adventurer Bertrand Piccard offers us a challenge: Find motivation in what seems impossible. He shares his own plans to do what many say can't be done -- to fly around the world, day and night, in a solar-powered aircraft.

From rockets to stock markets, many of humanity's most thrilling creations are powered by math. So why do kids lose interest in it? Conrad Wolfram says the part of math we teach -- calculation by hand -- isn't just tedious, it's mostly irrelevant to real mathematics and the real world. He presents his radical idea: teaching kids math through com...

With all the intensity and brilliance for which he is known, Alan Kay envisions better techniques for teaching kids by using computers to illustrate experience in ways -– mathematically and scientifically -- that only computers can.