#1 - Jared Diamond on why societies collapse

Season 2003 - Episode 1

Why do societies fail? With lessons from the Norse of Iron Age Greenland, deforested Easter Island and present-day Montana, Jared Diamond talks about the signs that collapse is near, and how -- if we see it in time -- we can prevent it.

#2 - Diana Nyad: Never, ever give up

Season 2013 - Episode 243

In the pitch-black night, stung by jellyfish, choking on salt water, singing to herself, hallucinating … Diana Nyad just kept on swimming. And that's how she finally achieved her lifetime goal as an athlete: an extreme 100-mile swim from Cuba to Florida — at age 64. Hear her story.

#3 - Robin Chase on Zipcar and her next big idea

Season 2007 - Episode 1

Robin Chase founded Zipcar, the world’s biggest car-sharing business. That was one of her smaller ideas. Here she travels much farther, contemplating road-pricing schemes that will shake up our driving habits and a mesh network vast as the Interstate.

#4 - Pete Alcorn on the world in 2200

Season 2009 - Episode 1

In this short, optimistic talk from TED2009, Pete Alcorn shares a vision of the world of two centuries from now -- when declining populations and growing opportunity prove Malthus was wrong.

#5 - George Dyson on Project Orion

Season 2002 - Episode 1

Author George Dyson spins the story of Project Orion, a massive, nuclear-powered spacecraft that could have taken us to Saturn in five years. His insider’s perspective and a secret cache of documents bring an Atomic Age dream to life.

#6 - Al Gore - 15 ways to avert a climate crisis

Season 2006 - Episode 1

With the same humor and humanity he exuded in An Inconvenient Truth, Al Gore spells out 15 ways that individuals can address climate change immediately, from buying a hybrid to inventing a new, hotter "brand name" for global warming. (TED2006) www.ted.com/talks/view/id/1

#7 - Paul Gilding: The Earth is full

Season 2012 - Episode 1

Have we used up all our resources? Have we filled up all the livable space on Earth? Paul Gilding suggests we have, and the possibility of devastating consequences, in a talk that's equal parts terrifying and, oddly, hopeful.

#8 - Asha de Vos: Why you should care about whale poo

Season 2015 - Episode 1

Whales have a surprising and important job, says marine biologist Asha de Vos: these massive creatures are ecosystem engineers, keeping the oceans healthy and stable by ... well, by pooping, for a start. Learn from de Vos, a TED Fellow, about the undervalued work that whales do to help maintain the stability and health of our seas — and our planet.

#9 - Mick Cornett: How an obese town lost a million pounds

Season 2014 - Episode 1

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 kilos).

#10 - Chris Bangle - Great cars are ArT

Season 2002 - Episode 2

American designer Chris Bangle explains his philosophy that car design is an art form in its own right, with an entertaining -- and ultimately moving -- account of the BMW Group's Deep Blue project, intended to create the SUV of the future.

#11 - Paul Stamets on 6 ways mushrooms can save the world

Season 2008 - Episode 2

Mycologist Paul Stamets lists 6 ways the mycelium fungus can help save the universe: cleaning polluted soil, making insecticides, treating smallpox and even flu.

#12 - Sherwin Nuland on electroshock therapy

Season 2001 - Episode 2

Surgeon and author Sherwin Nuland discusses the development of electroshock therapy as a cure for severe, life-threatening depression -- including his own. It’s a moving and heartfelt talk about relief, redemption and second chances.

#13 - JR's TED Prize wish: Use art to turn the world inside out

Season 2011 - Episode 2

JR, a semi-anonymous French street artist, uses his camera to show the world its true face, by pasting photos of the human face across massive canvases. At TED2011, he makes his audacious TED Prize wish: to use art to turn the world inside out. Learn more about his work and learn how you can join in at insideoutproject.net.

#14 - Hans Rosling shows the best stats you've ever seen

Season 2006 - Episode 2

You've never seen data presented like this. With the drama and urgency of a sportscaster, statistics guru Hans Rosling debunks myths about the so-called "developing world." In Hans Rosling’s hands, data sings. Global trends in health and economics come to vivid life. And the big picture of global development—with some surprisingly good news—snaps into sharp focus.

#15 - Peter Diamandis: Abundance is our future

Season 2012 - Episode 2

Onstage at TED2012, Peter Diamandis makes a case for optimism -- that we'll invent, innovate and create ways to solve the challenges that loom over us. "I'm not saying we don't have our set of problems; we surely do. But ultimately, we knock them down."

#16 - David Gallo on life in the deep oceans

Season 1998 - Episode 2

With vibrant video clips captured by submarines, David Gallo takes us to some of Earth's darkest, most violent, toxic and beautiful habitats, the valleys and volcanic ridges of the oceans' depths, where life is bizarre, resilient and shockingly abundant.

#17 - Maysoon Zayid: I got 99 problems... palsy is just one

Season 2014 - Episode 2

"I have cerebral palsy. I shake all the time," Maysoon Zayid announces at the beginning of this exhilarating, hilarious talk. (Really, it's hilarious.) "I'm like Shakira meets Muhammad Ali." With grace and wit, the Arab-American comedian takes us on a whistle-stop tour of her adventures as an actress, stand-up comic, philanthropist and advocate for the disabled.

#18 - Sebastian Wernicke: How To Use Data To Make A Hit Tv Show

Season 2016 - Episode 2

Does collecting more data lead to better decision-making? Competitive, data-savvy companies like Amazon, Google and Netflix have learned that data analysis alone doesn't always produce optimum results. In this talk, data scientist Sebastian Wernicke breaks down what goes wrong when we make decisions based purely on data -- and suggests a brainier way to use it.

#19 - Dan Dennett on dangerous memes

Season 2002 - Episode 3

Starting with the simple tale of an ant, philosopher Dan Dennett unleashes a devastating salvo of ideas, making a powerful case for the existence of memes -- concepts that are literally alive.

#20 - Rives tells a story of mixed emoticons

Season 2008 - Episode 3

Rives -- star of the Bravo special "Ironic Iconic America" -- tells a typographical fairy tale that's short and bittersweet.

#21 - Suzanne Talhouk: Don't kill your language

Season 2014 - Episode 3

More and more, English is a global language; speaking it is perceived as a sign of being modern. But — what do we lose when we leave behind our mother tongues? Suzanne Talhouk makes an impassioned case to love your own language, and to cherish what it can express that no other language can. In Arabic with subtitles. (Filmed at TEDxBeirut.)

#22 - Don Levy: A cinematic journey through visual effects

Season 2013 - Episode 3

#23 - Wael Ghonim: Inside the Egyptian revolution

Season 2011 - Episode 3

Wael Ghonim is the Google executive who helped jumpstart Egypt's democratic revolution ... with a Facebook page memorializing a victim of the regime's violence. Speaking at TEDxCairo, he tells the inside story of the past two months, when everyday Egyptians showed that "the power of the people is stronger than the people in power."

#24 - David Deutsch: A new way to explain explanation

Season 2009 - Episode 3

For tens of thousands of years our ancestors understood the world through myths, and the pace of change was glacial. The rise of scientific understanding transformed the world within a few centuries. Why? Physicist David Deutsch proposes a subtle answer.

#25 - Freeman Dyson says: let's look for life in the outer solar system

Season 2003 - Episode 3

Physicist Freeman Dyson suggests that we start looking for life on the moons of Jupiter and out past Neptune, in the Kuiper belt and the Oort cloud. He talks about what such life would be like -- and how we might find it.