Eduardo Briceño is a learner, leader, speaker and writer devoted to enabling a more learning-oriented world.

IBM's Charity Wayua is a research manager in Nairobi, Kenya, where she leads the company's public sector research team.

Ann Morgan challenged herself to read a book from every country in the world.

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.

Christiana Figueres is an internationally recognized leader on climate action and steered the global diplomatic effort that culminated in the 2015 Paris Agreement.

Tshering Tobgay is the president of the People's Democratic Party in Bhutan.

Regina Hartley thinks that those who don't always look good on paper may be just the person you need to hire.

Social psychologist Emily Balcetis explores perception, motivation, goal-setting and decision-making from conscious and nonconscious levels.

Shukla Bose is the founder and head of the Parikrma Humanity Foundation, a nonprofit that runs four extraordinary schools for poor children.

Priscilla Pemu is a medical doctor who specializes in the care of adults with complex medical problems, focusing on the in-patient.

Could an AI pass the entrance exam for the University of Tokyo? Noriko Arai oversees a project that wants to find out.

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."

Christian Benimana wants to develop the talent and potential of the next generation of African designers with socially-focused design principles.

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.

With passion, drive and a team of sustainability professionals, Pia Heidenmark Cook leads the sustainability agenda for the Ingka Group.

Forensic biologist