Christiana Figueres is an internationally recognized leader on climate action and steered the global diplomatic effort that culminated in the 2015 Paris Agreement.
Knut Haanaes believes that the secret to creating lasting, impactful companies is to find a balance between doing what you're good at and looking for new challenges to take on.
With Wait But Why, Tim Urban demonstrates that complex and long-form writing can stand out in an online wilderness choked with listicles and clickbait.
A record-setting triathlete, Minda Dentler is a polio survivor committed to inspiring people to move beyond their fear of failure and achieve their goals.
William Ury is a mediator, writer and speaker, working with conflicts ranging from family feuds to boardroom battles to ethnic wars. He's the author of "Getting to Yes."
Robin Steinberg is the CEO of The Bail Project, an organization designed to combat mass incarceration in the United States by disrupting the money bail system -- one person at a time. As she says: "I hate injustice and simply can't sit still when I see it."
Charles Hazlewood dusts off and invigorates classical music, adding a youthful energy and modern twists to centuries-old masterworks. At TEDGlobal, he conducts the Scottish Ensemble.