When General Stanley McChrystal started fighting al Qaeda in 2003, information and secrets were the lifeblood of his operations. But as the unconventional battle waged on, he began to think that the culture of keeping important information classified was misguided and actually counterproductive. In a short but powerful talk McChrystal makes the ...

About this talk: Margaret Morris wondered if a smart phone could add a new dimension to fostering mental health. She reveals how subjects successfully interacted with their phones throughout the day, mapping moods, charting physical responses, and getting instant ideas on confronting situations. And rather than expressing concerns about privacy,...

Powerful, personal stories of sharing one's true identity with the world.

A collection of talks that highlight the powerful impact of sharing history visually.

Ready for a change? Let these talks help you move out of your comfort zone and embrace the beauty of sharing who you are with the world.

From rides to homes and beyond, we're sharing everything these days, with the help of digital tools. But as modern and high-tech as the sharing economy seems, it's been alive in Africa for centuries, according to author Robert Neuwirth. He shares fascinating examples -- like apprenticeships that work like locally generated venture capital and sy...

An insightful look at the sharing economy (Uber, Airbnb and TaskRabbit, among others) and why trust has become a force in today’s market.

Rachel Botsman is a recognized expert on how collaboration and trust enabled by digital technologies will change the way we live, work, bank and consume.

Are schools killing creativity? What makes a great leader? How can I find happiness? These 25 talks are the ones that you and your fellow TED fans just can't stop sharing.

Lisa Gansky is the author of "The Mesh: Why the Future of Business Is Sharing," and the instigator behind the Mesh Directory (www.meshing.it).

Inspired by open-source software models, Sage Bionetworks co-founder Stephen Friend builds tools that facilitate research sharing on a massive and revolutionary scale.

Twitter gives a voice to the voiceless, a way to speak up and hit back at perceived injustice. But sometimes, says Jon Ronson, things go too far. In a jaw-dropping story of how one un-funny tweet ruined a woman's life and career, Ronson shows how online commenters can end up behaving like a baying mob -- and says it's time to rethink how we inte...

As political turmoil in Yemen continues, the editor of the Yemen Times, Nadia Al-Sakkaf, talks at TEDGlobal with host Pat Mitchell. Al-Sakkaf's independent, English-language paper is vital for sharing news -- and for sharing a new vision of Yemen and of that country's women as equal partners in work and change.

Dr. Helen Czerski investigates the physics of ocean bubbles and spends a lot of time sharing the big scientific ideas hidden in the small objects around us.

A decade ago, Robin Chase founded Zipcar in the US, now the largest car-sharing company in the world. Now she's exploring the next level of car-sharing: Buzzcar, a French startup that lets people rent their own cars to others. The details are fascinating (how does insurance work, exactly?), and the larger vision (she calls it Peers, Inc.) points...

Moneyman Steve Jurvetson takes TEDsters inside his awesome hobby -- launching model rockets –- by sharing some gorgeous photos, his infectious glee and just a whiff of danger.

Sherry Turkle studies how technology is shaping our modern relationships: with others, with ourselves, with it.

At the onstage introduction of Twirlr, a new social-sharing platform, someone forgets to silence their cell phone. And then ... this happens. (Song by Scott Brown and Anthony King; edit by Nathan Russell.)

Five billion people can't use the internet. Aleph Molinari empowers digitally excluded people, by giving them access to computers and sharing the know-how to use them.

Cybercrime netted a whopping $450 billion in profits last year, with 2 billion records lost or stolen worldwide. Security expert Caleb Barlow calls out the insufficiency of our current strategies to protect our data. His solution? We need to respond to cybercrime with the same collective effort as we apply to a health care crisis, sharing timely...

Travis Threlkel paints in light. His canvas: the largest buildings he can find. For one magical night this summer, the Empire State Building turned into a massive movie screen for giant projections of leopards, tigers, golden tamarinds and honeybees, playing above Manhattan from sundown to midnight. The projection was part of the promotion for ...

Google co-founders Larry Page and Sergey Brin offer a peek inside the Google machine, sharing tidbits about international search patterns, the philanthropic Google Foundation, and the company's dedication to innovation and employee happiness.

Dan Gilbert presents research and data from his exploration of happiness -- sharing some surprising tests and experiments that you can also try on yourself. Watch through to the end for a sparkling Q&A with some familiar TED faces.

Photographer Brian Skerry shoots life above and below the waves -- as he puts it, both the horror and the magic of the ocean. Sharing amazing, intimate shots of undersea creatures, he shows how powerful images can help make change.

The "dismal science" truly shines in this optimistic talk, as economist Alex Tabarrok argues free trade and globalization are shaping our once-divided world into a community of idea-sharing more healthy, happy and prosperous than anyone's predictions.

With his signature charm and searching insight, David Whyte meditates on the frontiers of the past, present and future, sharing two poems inspired by his niece's hike along El Camino de Santiago de Compostela in Spain.

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.

There's been an explosion of collaborative consumption -- web-powered sharing of cars, apartments, skills. Rachel Botsman explores the currency that makes systems like Airbnb and Taskrabbit work: trust, influence, and what she calls "reputation capital."

Andrew Fitzgerald is shaping new ways for Twitter and journalists to work together.

In 2011 Ronnie Cahana suffered a severe stroke that left him with locked-in syndrome: completely paralyzed except for his eyes. While this might shatter a normal person’s mental state, Cahana found peace in “dimming down the external chatter,” and “fell in love with life and body anew.” In a somber, emotional talk, his daughter Kitra shares how ...