Elizabeth Becker

Self - Author, "Overbooked"

Sangduen Lek Chailert

Self - Founder, Save Elephant Foundation

Costas Christ

Self - Editor at Large, National Geographic Traveler

Dr. Rachel Dodds

Self - Professor, Ryerson University

جين جودل

Self - Founder, the Jane Goodall Institute

Dr. Martha Honey

Self - Executive Director, Center for Responsible Travel

Judy Kepher-Gona

Self - Founder, Sustainable Travel & Tourism Agenda

Gary Knell

Self - CEO, National Geographic Partners