As warming reshapes our planet, the Arctic—a region that once seemed unchangeable and immutable, beyond the reach of modern problems—is quickly coming undone. While the old cold world can still be glimpsed in the movements of caribou, the hidden lives of wolves, or the hunting skill of an Inupiat elder, look closer and you’ll find a new Arctic emerging in its place. In Frostlines, Neil Shea reveals how the beauty, chaos, and power of change in the far north are reflected in the individual lives of people and animals. Structured as a revolution around the pole from east to west, Shea sojourns with a wolf pack on Canada’s Ellesmere Island and travels among the Indigenous Netsilingmiut and Tlicho peoples of Nunavut and the Northwest Territories. He tracks dwindling caribou herds across Alaska and measures the potential of oil and gas developments along North America’s wildest edge. And in the European Arctic, he explores the new Cold War rising between Russia, China, Europe, and the Unit