Jade Begay is an Indigenous rights and climate policy expert, organizer and filmmaker.

Jota Samper's work concentrates on sustainable urban growth and dwells at the intersection between urban informality and violent urban conflict.

Gitte Frederiksen explores the profound impact of disrupting current models of leadership -- and shows how to do it.

JD Schramm teaches future business leaders both the theoretical and practical aspects of communication.

Jody Williams won a Nobel Peace Prize for her efforts to eradicate landmines. Now she’s teaming up with five other female peace laureates to empower women to fight violence, injustice and inequality.

Jude Kelly is artistic director of Southbank Centre, Britain’s largest cultural institution.

Jodi-Ann Burey is on a mission to disrupt “business as usual” to achieve social change.

The work of artists Mathias Jud and Christoph Wachter questions the limits of our communication possibilities and, therefore, of our identity.

Delivering pointedly frank observations with down-home sincerity, actor Ashley Judd is building a committed activist career on intense personal experience.

Former Marine and Yale Law School graduate J.D. Vance writes about how upward mobility really feels.

Giada Gerboni works in surgical robotics, supporting surgeons with new flexible robotic devices in order to make once impossible operations a reality.

Writer Suleika Jaouad is changing the conversation about what it means to thrive in the wake of illness and life's unexpected interruptions.

As a producer, the creator and host of the popular syndicated radio program "Radiolab" (among many other shows and podcasts), Jad Abumrad tells true stories that help people find beauty in a chaotic world.

By day, Judy MacDonald Johnston develops children's reading programs. By night, she helps others maintain their quality of life as they near death.

At MIT, Hugh Herr builds prosthetic knees, legs and ankles that fuse biomechanics with microprocessors to restore (and perhaps enhance) normal gait, balance and speed.

Arthur Ganson's kinetic metal sculptures mix high art with gearhead humor. He's also the inventor of the kids' construction toy Toobers & Zots.

Anna Mracek Dietrich is one of the creators of the Transition, the "plane you can drive."

As an actor, filmmaker and founder of the online community HITRECORD, Joseph Gordon-Levitt seeks to inspire creativity through collaboration.

Matt Beane is an Assistant Professor in the Technology Management Program at the University of California, Santa Barbara and a Research Affiliate with MIT's Institute for the Digital Economy.

Lera Boroditsky is trying to figure out how humans get so smart.

Writer, producer and free-speech champion Norman Lear defined decades of US popular culture with his groundbreaking TV shows.

Juliet Schor is rethinking our approach to work — and making the case for a four-day work week.

Even the most advanced prosthetic isn't useful if it's hard to wear. This observation guides TED Fellow David Sengeh's work at the Biomechatronics group in the MIT Media Lab.

Jason Pontin is the editor-in-chief and publisher of MIT Technology Review.

Giulia Enders is working to reveal how our gut is at the core of who we are.

Randall Munroe sketches elegant and illuminating explanations of the weird science and math questions that keep geeks awake at night.

UPS's Julio Gil thinks that technology is flipping the equation on future cities, and that rural may soon become the new urban.

Ayah Bdeir is an engineer and artist, and is the founder of littleBits and karaj, an experimental art, architecture and technology lab in Beirut.

Gil Winch is a psychologist, organizational consultant and keynote speaker with 30 years of experience working with some of Israel's largest organizations.

G.T. Bynum is using data-driven outcomes and trackable goals to break down historic lines of division.