David Doubilet

National Geographic Photographer & Founding Member of the International League of Conservation Photographers

Bill Drayton

Social Entrepreneur, Founder & C.E.O of Ashoka. Leading an Everyone a Changemaker world movement.

Caroline Casey

Founder of Kanchi & The Ability Awards

Jeremy Gilley

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

Spencer Wells

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

Rory Stewart

Foreign Affairs & Human Rights Expert

How Not to Be a Politician: A Memoir

Peter Orszag

Economist, Chief Executive Officer of Lazard & Former Director of the Office of Management and Budget in the Obama Administration

Amy Brenneman

Actress, perhaps best known for her roles on "NYPD Blue," "Judging Amy," and "Private Practice"

An Phung

Multimedia Journalist

Dan Barber

Multi-Award-Winning Chef, Agronomist, Environmentalist, Author & Co-Owner of New York's Blue Hill Restaurant

Dan Barber - From Seed to Table - Aspen Ideas: Health 2023

Ian Bowles

Environmentalist & Energy Expert; Co-Founder of WindSail Capital Group

Dean Kamen

Founder of FIRST; President of DEKA Research & Development Corporation

Leonardo DiCaprio

Award-Winning Actor & Environmentalist

Brad Pitt

Actor, Producer, Philanthropist & Environmental Activist

Patrick Renvoise

International Neuromarketing Expert; C-Level Coach; Author of "Neuromarketing" & "The Persuasion Code"

Keynote Trailer on Neuromarketing by Patrick Renvoise

Chad Pregracke

Founder of Living Lands & Waters, CNN's Hero of the Year for 2013, Environmental Speaker & Bestselling Author

Roger Martin

Management Thinker, Author, Strategist & Advisor

A Plan Is Not a Strategy - YouTube

Mark Esposito

Harvard Professor of Business & Economics, Socio-Economics Futurist & Author

Gary Hirshberg

Co-Founder & Chief Organic Optimist of Stonyfield Farm

Dr. Angela Jackson

Harvard University Professor of Entrepreneurship & Innovation; Future of Work Strategist & Writer