Book excerpt: "Vallely transports the reader to places few will ever go: the very edges of the earth and of human endurance." —Evan Solomon In this gripping first-hand account, four seasoned adventurers navigate a sophisticated, high-tech rowboat across the Northwest Passage. One of the "last firsts" remaining in the adventure world, this journey is only possible because of the dramatic impacts of global warming in the high Arctic, which provide an ironic opportunity to draw attention to the growing urgency of climate change. Along the way, the team repeatedly face life-threatening danger from storms unparalleled in their ferocity and unpredictability and bears witness to unprecedented changes in the Arctic habitat and inhabitants, while weathering gale-force vitriol from climate change deniers who have taken to social media to attack them and undermine their efforts.