Dan Ariely questions the forces that influence human behavior and the irrational ways we often behave.

Since "Awakenings" stormed the bestseller lists (and the silver screen), Oliver Sacks has become an unlikely household name, single-handedly inventing the genre of neurological anthropology.

Daniel Levitin incorporates findings from neuroscience into everyday life.

Bidding adieu to his last "real job" as Al Gore's speechwriter, Dan Pink went freelance to spark a right-brain revolution in the career marketplace.

At his lab at Stanford School of Medicine, Tony Wyss-Coray studies aging -- and potential cures for it.

Isaac Lidsky has a very eclectic resume.

Sometimes called the "happiest man in the world," Matthieu Ricard is a Buddhist monk, author and photographer.

Stuart Brown's research shows play is not just joyful and energizing -- it's deeply involved with human development and intelligence. Through the National Institute for Play, he's working to better understand its significance.

David Byrne builds an idiosyncratic world of music, art, writing and film.

Carl Safina's writing explores the scientific, moral and social dimensions of our relationship with nature.

Gregory Petsko is a biochemist who studies the proteins of the body and their biochemical function. Working with Dagmar Ringe, he's doing pioneering work in the way we look at proteins and what they do.

Jeff Iliff is a neuroscientist who explores the unique functions of the brain.

After making a splash in the field of bioinformatics, Sebastian Wernicke moved on to the corporate sphere, where he motivates and manages multidimensional projects.

Frederick Streeter Barrett reveals how psychedelic experiences may allow us to tap into resources within ourselves to heal and to grow.

Prosanta Chakrabarty studies fish to help explain the evolution of human beings and our planet.

Marcus Byrne is fascinated by the way insects, particularly the intrepid dung beetle, have hardwired solutions to the challenges posed by their environments. Could they help humans solve problems?

Novelist, writer, culture critic and playwright Monica Byrne thinks that there's an infinite number of stories to tell, and she intends to tell as many as she can.

Nora Brown sings ballads and plays traditional old-time music with a heavy interest in eastern Kentucky banjo playing.

Neurologist V.S. Ramachandran looks deep into the brain’s most basic mechanisms. By working with those who have very specific mental disabilities caused by brain injury or stroke, he can map functions of the mind to physical structures of the brain.

Steve McCarroll is conducting groundbreaking research on the causes of mental illness.

Christina Costa teaches psychology to undergraduate and high school students and studies well-being and resilience.

Bruno Maisonnier founded Aldebaran Robotics, maker of the tiny, compelling humanoid Nao.

David Baron writes about science in books, magazines, newspapers and for public radio. He formerly served as science correspondent for NPR and science editor for PRI’s The World.

Bernie Dunlap is a true polymath, whose talents span poetry, opera, ballet, literature and administration. He is the president of South Carolina’s Wofford College.

An engineer with Google (he helped build Google Earth), Bruno Bowden is also an enthusiastic folder of paper.

Jackson Browne has written and performed some of the most literate and moving songs in popular music -- and has defined a genre of songwriting charged with honesty, emotion and personal politics.

A key player in the "Boston miracle" that lowered the rate of youth crime and gang violence, Rev. Jeffrey Brown is a Baptist minister.

TED Resident tobacco brown is a social artist working at the public intersection of environmental art and restorative justice.

Psychiatrist and addiction expert Judson Brewer researches mindfulness techniques that effectively help quell cravings of all kinds.

As the host of the "TED Radio Hour," Manoush Zomorodi explores fascinating ideas, astonishing inventions and new ways to think and create with the world's most remarkable minds.