Singer-songwriter KERA performs the powerful, entrancing song "Bright Future Ahead," leaving us with a profound message: "Breathe, and go again."

Fifty percent of traffic accidents happen at intersections. Gary Lauder shares a brilliant and cheap idea for helping drivers move along smoothly: a new traffic sign that combines the properties of "Stop" and "Yield."

Biochemist Kary Mullis talks about the basis of modern science: the experiment. Sharing tales from the 17th century and from his own backyard-rocketry days, Mullis celebrates the curiosity, inspiration and rigor of good science in all its forms.

Alberto Cairo's clinics in Afghanistan used to close down during active fighting. Now, they stay open. In this powerful talk, Cairo tells the moving story of why -- and how he found humanity and dignity in the midst of war.

(NOTE: This talk was given in 2009, and this field of science has developed quickly since then. Read "Corrections & Updates" below for more details.) Drug-resistant bacteria kills, even in top hospitals. But now tough infections like staph and anthrax may be in for a surprise. Nobel-winning chemist Kary Mullis, who watched a friend die when ...

TED Fellow Carrie Nugent is an asteroid hunter -- part of a group of scientists working to discover and catalog our oldest and most numerous cosmic neighbors. Why keep an eye out for asteroids? In this short, fact-filled talk, Nugent explains how their awesome impacts have shaped our planet, and how finding them at the right time could mean noth...

What's the harm in buying a knock-off purse or a fake designer watch? According to counterfeit investigator Alastair Gray, fakes like these fund terrorism and organized crime. Learn more about the trillion-dollar underground economy of counterfeiting -- from the criminal organizations that run it to the child labor they use to produce its goods ...

You're on an airplane when you feel a sudden jolt. Outside your window nothing seems to be happening, yet the plane continues to rattle you and your fellow passengers as it passes through turbulent air in the atmosphere. What exactly is turbulence, and why does it happen? Tomás Chor dives into one of the prevailing mysteries of physics: the comp...

The complexities of global geopolitics and the fluid nature of the world's supply chains pose challenges for corporations who want to do the right thing. Gary Niekerk shares the story of how Intel approached the challenge of unraveling its supply chains from mines in the Congo that were funding human rights abuses.

Journalism is a noble calling and the credibility of the profession is at stake. Today, there is weaponization of information and it is dividing us. Ann Curry passionately shares how people are yearning for journalism they can trust. Her Talk powerfully explains that truth leads to trust, which leads to understanding, understanding leads to hum...

It's a bustling day in Pompeii. After a quick visit to the market, Fabia spots her brothers, Lucius and Marcus, crossing the Forum. The siblings begin discussing Lucius' wedding — but a deafening boom interrupts them. They watch Vesuvius spew smoke, ash, and rock — and realize they've been living in the shadow of a volcano. Gary Devore follows t...

If you're a frequent flier, you're also a major polluter. What if there was a way to travel the world with less impact on the environment? In this quick, exciting talk, aviation entrepreneur and TED Fellow Cory Combs lays out how electric aircraft could make flying cleaner, quieter and more affordable -- and shares his work on Electric EEL, the ...

Given the scale of the challenge, the conversation around climate change is often tinged with doom and gloom. But climate tech investor Gabriel Kra thinks we need to reframe the crisis as a source of tremendous opportunity. He offers five big reasons to be optimistic about climate -- starting with the fact that many of the world's best minds are...

Urging us to turn away from voices perpetuating harmful stereotypes, gender equality advocate Gary Barker shares three insights on fostering a culture of care, compassion and connection among men. "We are the most wired-to-care species on the planet," he says. "But if you don't use it ... you don't get good at it."

We all want to use our talents to create something meaningful with our lives. But how to get started? (And ... what if you're shy?) Writer Kare Anderson shares her own story of chronic shyness, and how she opened up her world by helping other people use their own talents and passions.

When photographed under a 3D microscope, grains of sand appear like colorful pieces of candy and the stamens in a flower become like fantastical spires at an amusement park. Gary Greenberg reveals the thrilling details of the micro world.

As you surf the Web, information is being collected about you. Web tracking is not 100% evil -- personal data can make your browsing more efficient; cookies can help your favorite websites stay in business. But, says Gary Kovacs, it's your right to know what data is being collected about you. He unveils a Firefox add-on, Collusion, to do just th...

Gary Flake demos Pivot, a new way to browse and arrange massive amounts of images and data online. Built on breakthrough Seadragon technology, it enables spectacular zooms in and out of web databases, and the discovery of patterns and links invisible in standard web browsing.

At TED2009, Al Gore presents updated slides from around the globe to make the case that worrying climate trends are even worse than scientists predicted, and to make clear his stance on "clean coal."

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)

Our feverish appreciation of the virtual economy is tempered only by our concerns about privacy. If it's so easy to spend money online ... how hard could it be to breach security? Carey Kolaja, the head of PayPal, describes the future of money and fraud protection -- going beyond passwords and PINs to consider personal behavior, physical markers...

Néstor Guerra comparte las mentiras que solemos hacernos a nosotros mismos a la hora de emprender un nuevo negocio y describe tres de los principales sesgos que nos llevan al fracaso. Sin embargo también argumenta que muchas veces las mentiras son necesarias en la vida

A net-zero future is possible, but first we need to flip a mental switch to truly understand that we can stop the climate crisis if we try, says Nobel laureate Al Gore. In this inspiring and essential talk, Gore shares examples of extreme climate events (think: fires, floods and atmospheric tsunamis), identifies the man-made systems holding us b...

What qualifies someone to become a judge? The answer is surprisingly vague and even taboo to discuss. Lawyer Jessica Kerr sifts through the murky, mysterious process that sits at the center of the Commonwealth judicial system in countries like Australia -- and makes the case for "judge school," a legal education better fit to bring justice, legi...

Ukraine is on the front line of a war between freedom and tyranny, says chess grandmaster and human rights advocate Garry Kasparov. In this blistering call to action, he traces Vladimir Putin's rise to power and details his own path from chess world champion to pro-democracy activist in Russia. His message is a challenge to global leaders to ris...

On his first day as president, Joe Biden signed a letter of acceptance that set in motion the 30-day process for the United States to re-join the Paris Agreement on climate. On the day the US returns to the accord, John Kerry, the US Special Envoy for Climate, sits down with Nobel Laureate Al Gore to discuss the make-or-break decade ahead of us....

At the Web 2.0 Expo, entrepreneur Gary Vaynerchuk gives a shot in the arm to dreamers and up-and-comers who face self-doubt. The Internet has made the formula for success simpler than ever, he argues. So there's now no excuse not to do what makes you happy.

Plants are amazing machines -- for millions of years, they've taken carbon dioxide out of the air and stored it underground, keeping a crucial check on the global climate. Plant geneticist Joanne Chory is working to amplify this special ability: with her colleagues at the Salk Plant Molecular and Cellular Biology Laboratory, she's creating plant...

If architect and writer John Cary has his way, women will never need to stand in pointlessly long bathroom lines again. Lines like these are representative of a more serious issue, Cary says: the lack of diversity in design that leads to thoughtless, compassionless spaces. Design has a unique ability to dignify and make people feel valued, respe...

At TED@Cannes, Gary Wolf gives a 5-min intro to an intriguing new pastime: using mobile apps and always-on gadgets to track and analyze your body, mood, diet, spending -- just about everything in daily life you can measure -- in gloriously geeky detail.