Thirty-two years ago, Robert Swan became the first man to walk to both the North and South Poles. In 2017, he embarked on another journey to the South Pole with his son, Barney -- but this time using only renewable energy. The Swans spoke with Claudia Romo Edelman and Edie Lush in Davos, Switzerland, for the Global GoalsCast podcast about what inspired their journey, and the unexpected challenges they faced along the way.
