Xiuhtezcatl Martinez

Indigenous Climate Activist, Hip-Hop Artist, Author & Youth Director of Earth Guardians

Hip hop artist and activist Xiuhtezcatl Martinez talks climate change

Dr. Jane Goodall

Internationally Renowned Primatologist; Founder of the Jane Goodall Institute; UN Messenger of Peace

Dyan deNapoli

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

Zackery Rago

Director of Science and Education for Teens 4 Oceans, Featured in "Chasing Coral" Documentary

Jamie Oliver

Celebrity Chef, Bestselling Author & TV Personality

Patricia Arquette

Academy Award-Winning Actress Known for "Boyhood"; Activist, Humanitarian & Author

Erica Mackie

Co-Founder of Grid Alternatives

Adrian Grenier

Actor Known for HBO's "Entourage"; Environmental Activist; UN Ambassador

Kimbal Musk

Entrepreneur, Venture Capitalist & Environmentalist; Co-Founder of The Kitchen Community; Brother of Elon Musk

Tatiana Schlossberg

Author of "Inconspicuous Consumption: The Environmental Impact You Don't Know You Have", Journalist, Granddaughter of JFK

Don Cheadle

Actor, Activist & Author; Known for "Iron Man 2" & "Hotel Rwanda"

Rick Ridgeway

Environmentalist, Mountaineer, Expedition Author, VP of Environmental Initiatives & Special Projects at Patagonia

Sheila Watt-Cloutier

Environmental, Cultural & Human Rights Advocate, Former Canadian President of the Inuit Circumpolar Council

Tensie Whelan

Director of NYU's Center for Sustainable Business; Former President of the Rainforest Alliance

Dr. Sylvia Hood Washington

Chief Environmental Research Scientist at Environmental Health Research Associates, LLC.

Chad Pregracke

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

Autumn Peltier

Canadian Indigenous Clean Water Activist

Jamie Margolin

Climate Change Activist; Author; Founder & Co-Executive Director of Youth-Led Climate Action Group "Zero Hour"

Young climate activists testify on Capitol Hill ahead of U.N. Climate ...

Sheryl Crow

Grammy Award-Winning Singer-Songwriter

Sheryl Crow Won't Be Making Albums Anymore: 'It's Almost A Dying ...

Darin Olien

Co-Host of Netflix "Down To Earth" with Zac Efron, Best-Selling Author of "SuperLife: The 5 Simple Fixes That Will Make You Healthy, Fit and Eternally Awesome," Original Formulator of "Shakeology," Healthy Living & Superfoods Expert

Superlife: The 5 Simple Fixes That Will Make You Healthy, Fit, And Eternally Awesome