Jake Layes

Director, Global Cleantech & Entrepreneur Impact, Autodesk

Brian S. Lee

CEO & Co-Founder, The Honest Company; Co-Founder, Legalzoom; Co-Founder, ShoeDazzle

Sophia Bush

Actress, Humanitarian & Author; Currently starring on "Chicago PD"

Chimamanda Ngozi Adichie

Renowned African Novelist & Speaker

Ashley Judd

Actress, Activist, and Humanitarian

TedxNashville - Ashley Judd - My Life's Work as an Act of Worship

Patricia Arquette

2015 Academy Award-Winning Actress, Activist, Humanitarian and Author

Martin Eberhard

Founder, Original Chairman and CEO of Tesla

Stanford Seminar: Electric Vehicles & Startups - YouTube

Mayim Bialik

Neuroscientist & Star of "The Big Bang Theory"

Jonathan Woetzel

MGI Director and Senior Partner, Shanghai

Ted Turner

Media Mogul & Philanthropist

Michael Peen

Department Head,Kazakhmys PLC

Van Jones

CNN Contributor; Best-Selling Author; Human Rights, Education & Clean Energy Advocate

Rebuild the Dream

Sheena Iyengar

Columbia University Business Professor & Bestselling Author, The Art of Choosing

The Art and Science of Choosing Wisely

John Ratzenberger

Emmy-Nominated Actor, Entrepreneur & Philanthropist

Lisa Ling

Executive Producer and host of This is Life on CNN

Elizabeth Economy

C.V. Starr Senior Fellow & Director of Asia Studies at the Council on Foreign Relations

Jonathan Capehart

Opinion Writer for The Washington Post & Host of the "Cape Up" Podcast

Dr. J. Marshall Shepherd

Leading International Expert in Weather and Climate

Slaying the "zombies" of climate science | Dr. Marshall Shepherd ...

Ed Begley Jr.

Actor & Environmental Activist

'Bless This Mess': Ed Begley Jr. To Star In Fox Comedy Pilot | Deadline

Dr. Michio Kaku

World-Renowned Futurist & Theoretical Physicist

Making cancer as harmless as the common cold | Michio Kaku