Why build a virtual world? Philip Rosedale talks about the virtual society he founded, Second Life, and its underpinnings in human creativity. It's a place so different that anything could happen.

Jonathan Klein runs Getty Images, a stock photo agency whose vast archive of still photography and illustrations is a mainstay of the creative class.

Strange landscapes, scorching heat and (sometimes) mad crocodiles await scientists seeking clues to evolution's genius. Paleontologist Paul Sereno talks about his surprising encounters with prehistory -- and a new way to help students join the adventure.

Richard Branson talks to TED's Chris Anderson about the ups and the downs of his career, from his multibillionaire success to his multiple near-death experiences -- and reveals some of his (very surprising) motivations.

In this prophetic talk from 2003, roboticist Rodney Brooks talks about how robots are going to work their way into our lives -- starting with toys and moving into household chores ... and beyond.

Adam Savage talks about his fascination with the dodo bird, and how it led him on a strange and surprising double quest. It's an entertaining adventure through the mind of a creative obsessive.

MIT professor Neil Gershenfeld talks about his Fab Lab -- a low-cost lab that lets people build things they need using digital and analog tools. It's a simple idea with powerful results.

At the 2008 EG Conference, artist Miru Kim talks about her work. Kim explores industrial ruins underneath New York and then photographs herself in them, nude -- to bring these massive, dangerous, hidden spaces into sharp focus.

Athlete, actor and activist Aimee Mullins talks about her prosthetic legs -- she's got a dozen amazing pairs -- and the superpowers they grant her: speed, beauty, an extra 6 inches of height ... Quite simply, she redefines what the body can be.

In 1998, aircraft designer Paul MacCready looks at a planet on which humans have utterly dominated nature, and talks about what we all can do to preserve nature's balance. His contribution: solar planes, superefficient gliders and the electric car.

Nicholas Negroponte talks about how One Laptop per Child is doing, two years in. Speaking at the EG conference while the first XO laptops roll off the production line, he recaps the controversies and recommits to the goals of this far-reaching project.

For four billion years, what lived and died on Earth depended on two principles: natural selection and random mutation. Then humans came along and changed everything — hybridizing plants, breeding animals, altering the environment and even purposefully evolving ourselves. Juan Enriquez provides five guidelines for a future where this ability to ...

Debbie Millman talks to author Cheryl Strayed about her childhood, career and the value of taking a very long hike. Listen and subscribe to Design Matters with Debbie Millman and more podcasts from the TED Audio Collective at audiocollective.ted.com.

About this event: TED talks shown: Beau Lotto + Amy O'Toole - Science is for everyone, kids included. Daniel Kahneman - The riddle of experience vs. memory.

About this event: TEDxKids@Yerevan event will take place on June 1st, on the International Children’s Day. The theme of this event is "Think Like a Kid. This event intends to illustrate the amazing thinking paths that kids take to solve their problems and problems in their communities. We want to show that adults can learn a lot form kids if they treat kids as c...

Julie Lythcott-Haims speaks and writes on the phenomenon of helicopter parenting and the dangers of a checklisted childhood -- the subject of her book, "How to Raise an Adult."

Biochemist Joe DeRisi talks about amazing new ways to diagnose viruses (and treat the illnesses they cause) using DNA. His work may help us understand malaria, SARS, avian flu -- and the 60 percent of everyday viral infections that go undiagnosed.

Sheena Iyengar studies how we make choices -- and how we feel about the choices we make. At TEDGlobal, she talks about both trivial choices (Coke v. Pepsi) and profound ones, and shares her groundbreaking research that has uncovered some surprising attitudes about our decisions.

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.

Science writer Richard Preston talks about some of the most enormous living beings on the planet, the giant trees of the US Pacific Northwest. Growing from a tiny seed, they support vast ecosystems -- and are still, largely, a mystery.

From the "I have a dream" speech to Steve Jobs' iPhone launch, many great talks have a common structure that helps their message resonate with listeners. In this talk, presentation expert Nancy Duarte shares practical lessons on how to make a powerful call-to-action.

"Human migration is both inevitable and growing. What are we as a global community doing to address it?" asks human rights lawyer Becca Heller, who believes that every refugee and migrant deserves a safe pathway to resettlement. Through her work with the International Refugee Assistance Project (IRAP), Heller is showing how the power of the law ...

Woody Norris shows off two of his inventions that use sound in new ways, including the Long Range Acoustic Device, or LRAD. He talks about his untraditional approach to inventing and education, because, as he puts it: "Almost nothing has been invented yet." So -- what's next?

Sir Ken Robinson outlines 3 principles crucial for the human mind to flourish -- and how current education culture works against them. In a funny, stirring talk he tells us how to get out of the educational "death valley" we now face, and how to nurture our youngest generations with a climate of possibility.

Host Debbie Millman talks to author and researcher Brené Brown about belonging, courage, and vulnerability. Design Matters with Debbie Millman, the show about how incredibly creative people design the arc of their lives, is now a member of the TED family of podcasts through the TED Audio Collective. Listen or subscribe wherever you get your podc...

In 1993, Bill and Melinda Gates took a walk on the beach and made a big decision: to give their Microsoft wealth back to society. In conversation with Chris Anderson, the couple talks about their work at the Bill & Melinda Gates Foundation, as well as their marriage, their children, their failures and the satisfaction of giving most of their...

TED-Ed — TED's youth and education initiative — aims to spark and celebrate the ideas and knowledge-sharing of teachers and students around the world. Everything TED-Ed does supports learning — whether its producing a growing video library of original animated lessons, providing an international platform for teachers to create their own interact...

2005 TED Prize winner Edward Burtynsky has made it his life's work to document humanity's impact on the planet. His riveting photographs, as beautiful as they are horrifying, capture views of the Earth altered by mankind.

About this event: TEDxYerevanLive event is organized to inspire Armenian youth with TED talks and to educate them about TED. TEDxYerevanLive event is organized with the help of TUMO Center for Creative Technologies and targets TUMO students. Event is also open for students, high school kids and also TED fans and Armenian thinkers.

In the 1970s, Diana Nyad set long-distance swim records that are still unbroken. Thirty years later, at 60, she attempted her longest swim yet, from Cuba to Florida. In this funny, powerful talk at TEDMED, she talks about how to prepare mentally to achieve an extreme dream, and asks: What will YOU do with your wild, precious life?