Raj Patel

Award-Winning Writer, Food Politics Activist, Filmmaker & Academic

Adrian Grenier

Actor Known for HBO's "Entourage"; Environmental Activist, UN Ambassador & Social Impact Entrepreneur; Founder of Lonely Whale Foundation; Co-Founder of DuContra Ventures

Blake Mycoskie

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

Willie Nelson

Country Music Singer-Songwriter Known for "On The Road Again" & "Always On My Mind"

Robert Bryce

Energy Expert, Veteran Journalist & Acclaimed Author

A Question of Power: Electricity and the Wealth of Nations

Spencer Wells

Geneticist, Anthropologist, Author, Entrepreneur, Adjunct professor at the University of Texas at Austin

Kay Firth-Butterfield

CEO of Good Tech Advisory LLC & Expert on AI Governance; Senior Research Fellow at the University of Texas

Miki Agrawal

Social Entrepreneur & Founder of TUSHY, THINX & Wild; Author of "Do Cool Sh*t" & "Disrupt-Her: A Manifesto for the Modern Woman"

Justin “The Big Pygmy” Wren

Former UFC Fighter, Author, Humanitarian & Indigenous Rights Activist; Founder of Fight For The Forgotten

Jessica Neilas

CEO & Creative Director at Thoughtform

Jessica Neilas - ActionCOACH Central Texas

Moriba Jah

Astrodynamicist & Space Environmentalist

Moriba Jah, Astrodynamicist | 2022 MacArthur Fellow

Zoe Schlag

Entrepreneur, Investor and Activist

Saanya Bhargava

Founder of Remora and Impact Gravitas

Scott W. Tinker

Director of the Bureau of Economic Geology; State Geologist of Texas; Geosciences Professor at The University of Texas at Austin

Scott Eastwood

Model & Actor Known for "The Longest Ride"

Andrew Mangan

Founder, United States Business Council for Sustainable Development

Colin Averill

Ecologist & Climate Change Scientist

Sam Martin

Founder & Chief Content Officer at Martin Content Studios