Today we’re running a special show for the 50th anniversary of Earth Day. Guest host Chris Orwig interviews conservation photographer Cristina Mittermeier. Cristina is a co-founder of Sea Legacy and she has made it her life’s mission to use her images to help empower indigenous peoples and to bring attention to the natural world to convert apathy into action.

See more about Cristina Mittermeier and Chris Orwig. And see a selection of photos by Cristina Mittermeier below.