Alexandra Cousteau

Environmental Activist, Storyteller & Ocean Advocate

Sylvia Earle

Explorer-in-Residence at National Geographic & Oceanographer; Former Chief Scientist of the NOAA

Jimmy Chin

Climber, Photographer & Filmmaker

Leland Melvin

Engineer, Former NASA Astronaut & Former NFL Wide Receiver

Leroy Chiao

Former Astronaut & International Space Station Commander; Commercial Space Flight Pioneer

Andrew Zimmern

Four-Time James Beard Award-Winning TV Personality, Chef, Writer & Teacher

Jimmy Chin & Elizabeth Chai Vasarhelyi

Academy Award-Winning Documentary Filmmaker & World-Renowned Photographer; Directors of "Meru" & "Free Solo"

Scott Parazynski

Astronaut, Physician & Everest Summiter

Chris Hadfield

First Canadian to Walk in Space; Retired Astronaut & Former Commander of the International Space Station

Dr. Rae Wynn-Grant

Conservation Scientist, Large Carnivore Ecologist, Nature Storyteller & Advocate

Wild Life: Finding My Purpose in an Untamed World

Les Stroud

Star of "Survivorman", Producer, Author, Filmmaker & Activist

LANCO

American Country Band Known for "Greatest Love Story"

Bertrand Piccard

First to Circumnavigate the Globe Non-Stop in a Hot Air Balloon

Brian Cox

Rock Star Physicist, TV Presenter & Best-Selling Author

Carlton Ward Jr.

Conservation Photographer & National Geographic Explorer; Founder of Florida Wild

Michael Lopez-Alegria

Former Astronaut & Navy Test Pilot

Arne Elias Corneliussen

Explorer & Geopolitical Thinker

Interview with Arne Elias Corneliussen on the future of Africa

Albert Yu-Min Lin

Research Scientist/ Engineer; Research Scientist at the University of California, San Diego