David Thoreson, avid sailor and nature photographer from Lake Okoboji, Iowa, had already traveled extensively when he began sailing the high seas with a “salty” farmer from southern Minnesota. Together they began exploring the far reaches of the globe. On their second attempt at crossing the Arctic’s Northwest Passage, Thoreson realized they were witnessing a rapidly changing Arctic and ocean environment. He later became the first American explorer in history to sail the Northwest Passage in both directions. Now a sought-after speaker on ocean and climate issues, Thoreson has shared his observations at the World Science Festival, TED Talks and the 2016 Nobel Peace Prize Forum.