Leah Thomas

Intersectional Environmentalist

Mayim Bialik

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

Harvey Wasserman

Journalist, Author, Democracy Activist & Advocate for Renewable Energy

Bunker Roy

Founder of Barefoot College

Jeremy Gilley

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

Rory Stewart

Foreign Affairs & Human Rights Expert

How Not to Be a Politician: A Memoir

Bryan Alexander

Futurist & Author

Dan Porterfield

President & CEO of the Aspen Institute; Advocate for Expanding Educational Opportunity & Improving the Human Condition

Dan Porterfield - Heart of Giving Podcast

Dr. Alison Thompson

Humanitarian & Author of The Third Wave

Malcolm London

Young Poet, Educator, Activist & TED Speaker Known For "High School Training Ground"

L. Rafael Reif

Venezuelan-American Electrical Engineer, Writer & Academic Administrator; Former President of the Massachusetts Institute of Technology

MIT President L. Rafael Reif Charge to the Class of 2022

Sandy Speicher

Education Lead, IDEO

Richard Heinberg

The author of nine books, including The Party’s Over, Peak Everything, and the newly released Blackout, Richard Heinberg is widely regarded as one of the world’s most effective communicators of the urgent need to transition away from fossil fuels.

Darren Walker

President of the Ford Foundation; Chair of the US Alliance on Impact Investing

HOW Insights — NEW

Lakshmi Karan

Executive Director, Genentech Foundation and Director, Global Strategy, at Riders for Health

David Bornstein

Author, Fixes column in The New York Times and Founder, Solutions Journalism Network

Ray Zahab

Ultra-marathon Runner and Adventurer; Host, "The Project"; Author of "Running for My Life"

John Wood

Founder & Board Co-Chair of Room to Read; Former Microsoft Marketing Executive

Lisa Gansky

Corporate Advisor, Marketing Expert & Author of "The Mesh: Why the Future of Business Is Sharing"

Clay Shirky

Expert on New Technology & Social Media, & How They Shape Culture; Professor & Distinguished Writer in Residence, NYU