Adrian Grenier

Actor Known for HBO's "Entourage"; Environmental Activist; UN Ambassador

Aidan Gallagher

Actor, Musician & UN Environment Goodwill Program Ambassador; Known for "The Umbrella Academy"

Aidan Gallagher On 'The Umbrella Academy' and His Music | Seventeen

Al Gore

45th Vice President of the United States, Nobel Peace Laureate & Bestselling Author

Alaa Murabit

Architect of the Sustainable Development Goals, Nobel Peace Prize Nominee, Gates Foundation Director & UN High level Commissioner

Alanis Morissette

Alt-Rock Angst Icon Known for "You Oughta Know" & "Ironic"

Alex Honnold

Professional Rock Climber & Star of the Academy-Award Winning Documentary "Free Solo"

Alexis Ohanian

Co-Founder of Initialized Capital & Co-Founder of Reddit; Entrepreneur, Investor, Activist & Bestselling Author

Alexis Ohanian Carthage College Commencement Address 2014

Alice Waters

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

Alok Sharma

British Politician Serving as President for COP26 and Minister of State at the Cabinet Office

Alysia Reiner

Actor, Activist & Entrepreneur

Alyssa Milano

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

Amin Toufani

CEO of T Labs, Creator of Adaptability.org, Chair for Finance & Economics at Singularity University

Amory Lovins

Co-Founder & Chairman Emeritus of Rocky Mountain Institute

Amy Smart

Actress, Environmentalist & Co-Founder of Smart House Collections

Anjelica Huston

Actress, Director and Former Fashion Model

Anne Korin

Co-director of the Institute for the Analysis of Global Security

Annie Lennox

Singer-Songwriter Known for "Sweet Dreams;" Political Activist & Humanitarian

Arnold Schwarzenegger

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

Ashley Judd

Actress, Activist & Humanitarian

Bill Maher

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

Bill Nye

"The Science Guy"; Science Communicator, TV Presenter & Mechanical Engineer; Climate Change Activist

Bjarke Ingels

Founder & Creative Partner of Bjarke Ingels Group; Influential Architect

Blake Mycoskie

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

Blythe Danner

Emmy Award-Winning Actress & Activist

Bono

Lead Singer of U2, Activist & Co-Founder of DATA (Debt, AIDS, Trade, Africa)

Boyan Slat

Inventor, Entrepreneur & Founder of The Ocean Cleanup

Brad Pitt

Actor, Producer, Philanthropist & Environmental Activist

Brian Deese

Former Director of the National Economic Council in the Biden Administration; Institute Innovation Fellow at MIT

Inflation core is too high: White House economist Brian Deese ...

Carlos Brito

Chief Executive Officer, Anheuser-Busch InBev

Caroline Blazovsky

America’s Healthy Home Expert, Media Personality, CEO/Founder of My Healthy Home, Environmental Consultant & Entrepreneur