Alice Waters

Executive Chef, Founder & Owner of Chez Panisse; Sustainable Agriculture Advocate

Alyssa Milano

Actress, Author, Philanthropist & Founder of Touch by Alyssa Milano; Known for "Charmed" and "Who's the Boss"

Arnold Schwarzenegger

Actor, Producer, Director, Writer; California’s 38th Governor; Host of "Celebrity Apprentice"

Bill Maher

Political Satirist & Host of HBO's "Real Time"

Blake Mycoskie

Founder of TOMS, Social Entrepreneur & Author of NY Times Bestseller "Start Something That Matters"

Dambisa Moyo

Global Economist, Author & Investor in the Future

Gary White

CEO & Co-Founder of WaterEquity & Water.org with Matt Damon

Jacqueline Novogratz

Founder & CEO of Acumen Fund

Jeremy Rifkin

Leading Global Technologist, Futurist, Authority on World Economic & Environmental Trends

Jessica Alba

Actress; Entrepreneur; Founder & CEO of The Honest Company

Joseph Stiglitz

American Economist, Professor at Columbia University & Nobel Memorial Prize in Economic Sciences 2001

Joshua Cooper Ramo

Managing Director at Kissinger Associates; Author of "The Age of the Unthinkable" & "Seventh Sense"

Kathy Bates

Academy Award-Winning Actress; Cancer Survivor & Chairperson for the Lymphatic Education & Research Network

Lawrence Summers

Professor & Former President of Harvard University; Former Secretary of the Treasury, Director of the National Economic Council, & Chief Economist of the World Bank

Mayim Bialik

Neuroscientist, Mental Health Advocate & Actress Known for "The Big Bang Theory"

Nash Grier

Social Media Guru, Digital Influencer & Environmental Activist

Olivia Munn

Television & Film Actress; Known for "Newsroom" & "X-Men: Apocalypse"

Olivia Munn on Jon Stewart | 2022 Mark Twain Prize

Parag Khanna

Managing Partner at FutureMap; Strategic Advisor to Governments & Global Companies; Bestselling Author; TED Speaker

Peter Senge

Senior Lecturer in Leadership and Sustainability at the MIT Sloan School of Management, Pioneer in the Field of Learning Organizations, and Author of The Fifth Discipline

Pranav Mistry

Computer Scientist & Inventor