Bill Frist

• U.S. Senator (R-TN) and Senate Majority Leader, Transplant Surgeon & Physician, and Chairman of Nature Conservancy's Global Board

Quannah Chasinghorse

• Fashion Model, Indigenous Land Protector, and Advocate for Indigenous Rights, Sovereignty, and Representation

Ashley Judd

• Actress, Activist, UN Messenger of Peace; Author of 'All That is Bitter and Sweet,' a Memoir on Mental Health, Resilience, & Recovery

Erin Brockovich

• Iconic Environmental Activist & Consumer Advocate

Hope Jahren

• 3x Fulbright Award Winner; Internationally Bestselling Author of 'The Story of More' & 'Lab Girl'

David Miliband

• CEO of the International Rescue Committee, Former Secretary of State for Foreign and Commonwealth Affairs (UK)

Dr. Rae Wynn-Grant

• Renowned Wildlife Ecologist, Conservationist, and Host of NBC's 'Wild Kingdom'

Sasha DiGiulian

• Professional Rock Climber, Two-Time Female Overall World Champion, and Founder of Female Focused Adventures

Felipe Calderon

• Fmr. President of Mexico (2006-2012); Founder of The Global Commission on the Economy & Climate

Lily Cole

• Environmental Activist, Award-Winning Filmmaker, and Author of 'Who Cares Wins'

Ron Finley

• The Gangster Gardener and Urban Renewal & Anti-Food Deserts Activist

Carol Browner

• Fmr. Director, White House Office of Energy and Climate Change Policy; Fmr. Administrator, U.S. Environmental Protection Agency; Board Chair, League of Conservation Voters

Jon Tester

• U.S. Senator (D-Montana) (2007-2025), Chairman of the Senate Appropriations Committee on Defense (2021-2025) and Committee on Veterans Affairs (2021-2025), Central negotiator of the $1.2T American Infrastructure Investment

Camille Kostek

• Model, Actress, Entrepreneur, and Host of NBC's 'Dancing with Myself' and Co-Host of TBS' 'Wipeout'

Freya Air Aspinall

• Model; Conservationist; Social Media Influencer

Prince Harry, Duke of Sussex

• Humanitarian, Military Veteran, Mental Wellness Advocate, Environmentalist, and Founder of The Invictus Games

Her Majesty Queen Noor

• Global Humanitarian & Activist, Philanthropist, and Founding Member of Global Zero

Edward Norton

• Award-Winning Actor, Humanitarian, and Entrepreneur

Leigh & Leslie Keno

• Antique Experts on Antiques Roadshow

Roy Neel

• Chief of Staff to Congressman, Senator, and Vice President Al Gore

Jonathan F. P. Rose

• Renowned Urban Development Thought Leader

Marshall Shepherd

• Leading International Expert on Weather, Climate and Atmospheric Related Sciences

Barbara Boxer

• U.S. Senator (D-CA) (1993-2017)

Yossi Ghinsberg

• Adventurer & Survivor of the Amazon Forest, Bestselling Author, and Advocate for Environmental and Humanitarian Issues

Navi Radjou

• Innovation and Leadership Expert, Thinkers50 Award Winner

John Izzo

• Leading Business Strategy Expert

David Katz

• Founder and CEO of Plastic Bank, Globally Renowned Social Entrepreneur, and Ocean Steward

Henry Waxman

• Leading Legislator in Congress on Issues of Health, Energy & Environment

Juan Manuel Santos

• President of Colombia (2010-2018), Nobel Peace Prize Laureate (2016), and Advocate for ESG Investing & Sustainable Development

Steven Donziger

• Renowned Human Rights Attorney and Environmental Advocate who Led the Team that Won $9.5B Against Chevron

Ed Begley, Jr.

• Emmy-Nominated Actor