This week on Sea Change Radio we talk about journeys, large and small. First we hear from Marilyn and Hal Weiner, the filmmakers behind the PBS series, Journey To Planet Earth. The documentary series is hosted and narrated by Matt Damon, and explores the voyage that human beings and the planet are taking together. The latest episode illustrates the connection between the severe weather that climate change is already bringing and security threats around the world. Then, we hear from author Tom Courtney, who discusses the walkabout movement – travelling by foot from inn to inn. Courtney talks about his books, which are essentially how-to guides for a soul-enriching way to explore and commune with nature.