David Thoreson is a professional photographer, sailor and explorer. David shares stories of adventure as the first American to sail the Arctic’s Northwest Passage in both directions. Thoreson provides an eye-witness account of the climate change impacts to sensitive Arctic and ocean environments. David's work has appeared across a broad spectrum of media from the Smithsonian to the Guardian, PBS and TED. In 2010, David completed a 28,000-mile circumnavigation of the N/S American continents on the 64-foot research sailboat Ocean Watch. Thoreson is an Explorers Club Fellow and recent participant in the 2016 Nobel Peace Prize Forum. His personal climate story has just been documented in a new book, “Over the Horizon: Exploring the Edges of a Changing Planet.”