Bernard Kouchner

Former Minister of Health of France; Founder of Nobel Peace Prize-Winning Médecins Sans Frontières

Peter Thum

Co-Founder & CEO of Muse; Founder of Ethos Water, Entrepreneur, Humanitarian

How Ethos Turned The Bottled Water Industry On It's Head

David Goodman

New York Times Best-Selling Author & Journalist

Annie Lennox

Singer-Songwriter Known for "Sweet Dreams;" Political Activist & Humanitarian

Brian Hoffstein

Contributing Writer

Craig Kielburger

Social Entrepreneur, Co-Founder of WE Charity & Author

3 Lessons I Learned While Working With Participant Media ...

Dyan deNapoli

Penguin Expert, TED Speaker & Award-Winning Author of "The Great Penguin Rescue"

Xavier Sala-i-Martin

Economics Professor at Columbia, Chief Economic Advisor at WEF, Creator of GCI

Vandana Shiva

Environmental Advocate, Feminist Activist, Author

Tristram Stuart

Founder of Toast Ale, Food Waste Activist, Author

Shashi Tharoor

Indian Politician, Former UN Diplomat, Author

James Woolsey

Former Director of the C.I.A.

Edward C. Chow

Senior Associate at the Center for Strategic and International Studies, Energy Security and Climate Change Program

Alanis Morissette

Mental Health & Eating Disorder Advocate; Grammy-Winning Alt-Rock Angst Singer-Songwriter; Known for "You Oughta Know" & "Ironic"

Alanis Morissette Talks 'Jagged Little Pill' and Joan Jett

Cate Blanchett

Academy Award-Winning Actress Known for "Elizabeth" & "The Aviator;" Ambassador for the Australian Conservation Foundation

Bjorn Lomborg

Political Scientist & Author of "The Skeptical Environmentalist"

Peter Rojas

Co-founder of Gizmodo and of Engadget

Daniel Yergin

Energy Expert, Pulitzer Prize Winner, Vice Chairman of IHS Markit

Daniel Yergin discusses the energy sector and his book “The New

James Barisic

Disruptive thinker, lecturer, social technologist and political campaigner

Sigourney Weaver

Academy Award Nominee, Star of "Alien" Series, Tony Award Nominee

Sigourney Weaver on her unpredictable career