What makes you, you? Psychologists like to talk about our traits, or defined characteristics that make us who we are. But Brian Little is more interested in moments when we transcend those traits -- sometimes because our culture demands it of us, and sometimes because we demand it of ourselves. Join Little as he dissects the surprising differenc...

Physicist Brian Greene explains superstring theory, the idea that minscule strands of energy vibrating in 11 dimensions create every particle and force in the universe.

What makes for a meaningful life? Social psychologist Brian S. Lowery explores three ideas tied to the experience of meaning and shows why simply pursuing personal achievements isn't the best way to find it.

Ever have the sneaking suspicion your vote doesn't really matter? Software engineer Brian Olson has designed a powerful algorithm that transforms gerrymandered districts into vibrant, perfectly impartial state maps so that every vote counts.

"Rock-star physicist" Brian Cox talks about his work on the Large Hadron Collider at CERN. Discussing the biggest of big science in an engaging, accessible way, Cox brings us along on a tour of the massive project.

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.

In tough economic times, our exploratory science programs -- from space probes to the LHC -- are first to suffer budget cuts. Brian Cox explains how curiosity-driven science pays for itself, powering innovation and a profound appreciation of our existence.

You want to eat a more climate-friendly diet but you're not ready to be vegan or vegetarian? That's OK, says entrepreneur Brian Kateman. Instead, you could be a "reducetarian" — someone who's making the conscious choice to decrease the amount of meat they consume. In this talk, he explains the costs of our current diets and the benefits that ada...

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...

Every doctor makes mistakes. But, says physician Brian Goldman, medicine's culture of denial (and shame) keeps doctors from ever talking about those mistakes, or using them to learn and improve. Telling stories from his own long practice, he calls on doctors to start talking about being wrong.

Is there more than one universe? In this visually rich, action-packed talk, Brian Greene shows how the unanswered questions of physics (starting with a big one: What caused the Big Bang?) have led to the theory that our own universe is just one of many in the "multiverse."

Satan, the beast crunching sinners' bones. Lucifer, the fallen angel. Mephistopheles, the trickster striking deals. These three divergent devils are all based on Satan of the Old Testament. But unlike any of these literary devils, the Satan of the Bible was a relatively minor character. So how did he become the ultimate antagonist, with so many ...

With huge, city-wide casts from an array of communities, theater director Lear deBessonet's productions illuminate the unique power of the arts to transform our lives through collective expression. She explores the power of spectacle to inspire awe, connect individuals and heal loneliness with tangible, life-changing results. In a dramatic momen...

AI has the potential to impact the way humans interact with the world — and each other. Social psychologist Brian S. Lowery and AI technologist Kylan Gibbs dive into the ramifications of emerging technologies on people's mental health and social dynamics. Hear why Gibbs thinks, counterintuitively, the more we use AI, the less real it will feel —...

Sex therapist Ian Kerner hears about a common problem from his patients: "failure to launch," or the inability to build and maintain sexual momentum. What's the solution? Whether you're looking to reignite the spark in your relationship or reconnect with your own desire, Kerner shares advice on how to cultivate your erotic imagination and get ba...

Challenges and problems can derail your creative process ... or they can make you more creative than ever. In the surprising story behind the best-selling solo piano album of all time, Tim Harford may just convince you of the advantages of having to work with a little mess.

Luck is rarely a lightning strike, isolated and dramatic -- it's much more like the wind, blowing constantly. Catching more of it is easy but not obvious. In this insightful talk, Stanford engineering school professor Tina Seelig shares three unexpected ways to increase your luck -- and your ability to see and seize opportunities.

Are you an introvert ... or an extrovert? You might not know yourself as well as you think. Adam Grant talks with "Quiet" author Susan Cain and visits a workplace where personality training starts even before job training, to help you discover what your traits really are -- and how you can stretch beyond them. This episode is brought to you by W...

The photo director for National Geographic, David Griffin knows the power of photography to connect us to our world. In a talk filled with glorious images, he talks about how we all use photos to tell our stories.

As a young child, Tania Luna left her home in post-Chernobyl Ukraine to take asylum in the US. And one day, on the floor of the New York homeless shelter where she and her family lived, she found a penny. She has never again felt so rich. A meditation on the bittersweet joys of childhood -- and how to hold them in mind.

Carolyn Jones spent five years interviewing, photographing and filming nurses across America, traveling to places dealing with some of the nation's biggest public health issues. She shares personal stories of unwavering dedication in this celebration of the everyday heroes who work at the front lines of health care.

Is your school or workplace divided between the "creatives" versus the practical people? Yet surely, David Kelley suggests, creativity is not the domain of only a chosen few. Telling stories from his legendary design career and his own life, he offers ways to build the confidence to create. (From The Design Studio session at TED2012, guest-curat...

What would a music video look like if it were directed by the music, purely as an expression of a great song, rather than driven by a filmmaker's concept? Designer Jakob Trollback shares the results of his experiment in the form.

Is there a definitive line that divides crazy from sane? With a hair-raising delivery, Jon Ronson, author of The Psychopath Test, illuminates the gray areas between the two. (With live-mixed sound by Julian Treasure and animation by Evan Grant.)

Digital creator Dylan Marron has racked up millions of views for projects like "Every Single Word" and "Sitting in Bathrooms With Trans People" -- but he's found that the flip side of success online is internet hate. Over time, he's developed an unexpected coping mechanism: calling the people who leave him insensitive comments and asking a simpl...

Aboard Mission Blue, scientist Greg Stone tells the story of how he helped the Republic of Kiribati to create an enormous protected area in the middle of the Pacific -- protecting fish, sealife and perhaps the island nation itself.

Paul MacCready -- aircraft designer, environmentalist, and lifelong lover of flight -- talks about his long career.

Joe Gebbia, the co-founder of Airbnb, bet his whole company on the belief that people can trust each other enough to stay in one another's homes. How did he overcome the stranger-danger bias? Through good design. Now, 123 million hosted nights (and counting) later, Gebbia sets out his dream for a culture of sharing in which design helps foster c...

Researcher Kwabena Boahen is looking for ways to mimic the brain's supercomputing powers in silicon -- because the messy, redundant processes inside our heads actually make for a small, light, superfast computer.

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.