Bunker Roy

Founder of Barefoot College

Harald Haas

Communications Technology Innovator & Chair of Mobile Communications at the University of Edinburgh

Marco Tempest

Cyber-Illusionist

Sonaar Luthra

Sonaar Luthra is the creator of Water Canary, a water-testing device that collects real-time water-quality data from the field.

Paul Snelgrove

Paul Snelgrove led the group that pulled together the findings of the Census of Marine Life -- synthesizing 10 years and 540 expeditions into a book of wonders.

Ben Goldacre

Physician; Best-Selling Academic & Science Writer

Geoffrey West

Theoretical Physicist, Distinguished Professor & Past President of Santa Fe Institute

Mike Biddle

Co-founder, MBA Polymers

Pamela Meyer

Founder & CEO of Calibrate; Author of "Liespotting;" TED Speaker

Jeremy Gilley

Actor, Filmmaker & Founder of the Peace One Day Non-Profit

Mikko Hypponen

Computer Security Expert; Chief Research Officer at WithSecure & Principal Research Advisor at F-Secure

If It's Smart, It's Vulnerable

Lucianne Walkowicz

Astronomer, Movement Artist & Educator

Alex Steffen

Author of "Carbon Zero: Imagining Cities That Can Save the Planet"

Neil MacGregor

The writer and presenter of the BBC Radio 4 series "A History of the World in 100 Objects" and the accompanying book.

Alison Gopnik

Professor & World Leader in Children's Learning and Development

Charles Hazlewood

Award-winning conductor and musical revolutionary; Speaker, and Artistic Director of Paraorchestra

Josette Sheeran

President and CEO of the Asia Society; Former Vice Chairman of the World Economic Forum.

Lee Cronin

With his research group, Lee Cronin is investigating the emergence of complex self-organising chemical systems -- call it inorganic biology.

Thandiwe Newton

Award-Winning British Actress Best Known for her Role in Westworld

Thandie Newton Makes Great Banana Bread, But Watch This Before You Eat It

Svante Paabo

Max Planck Institute Director, Department of Genetics

Anna Dietrich

‎Entrepreneur; Consultant; Speaker; COO & Co-Founder of Terrafugia, Inc.

Daniel Wolpert

A neuroscientist and engineer, Daniel Wolpert studies how the brain controls the body.

Peter Fankhauser

Peter Fankhauser is the leader of a team of students working on Rezero, a robot that balances on a single sphere.

Robin Ince

The rational-minded Robin Ince conducts live experiments in comedy.

Todd Kuiken

Biomedical Engineering Manager at the Rehabilitation Institute of Chicago

Adam Ostrow

Chief Digital Officer, TEGNA

Amy Lockwood

Deputy Director of Stanford's Center for Innovation in Global Health

Monika Bulaj

Monika Bulaj’s stunning, painting-like photographs blur religious and cultural divisions, exploding stereotypes. She is a TED Fellow.

Jarreth Merz

Jarreth Merz\' new film, \"An African Election,\" follows the 2008 presidential elections in Ghana from start to finish.

Rory Stewart

Foreign Affairs & Human Rights Expert