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Six days after giving birth, a polar bear named Aurora got up and walked away from her den at the Columbus Zoo, leaving her tiny squealing cub to fend for herself. Hours later, Aurora still hadn’t returned. The cub was furless and blind, and with her temperature dropping dangerously, the zookeepers entrusted with her care felt they had no choice: They would have to raise one of the most dangerous predators in the world by hand. Over the next few weeks, a group of veterinarians and zookeepers worked around the clock to save the cub, whom they called Nora. Humans rarely get as close to a polar bear as Nora’s keepers got to their fuzzy charge. But the two species have long been intertwined. Three decades before Nora’s birth, her father, Nanuq, was orphaned when an Inupiat hunter killed his mother, leaving Nanuq to be sent to a zoo. That hunter, Gene Agnaboogok, now faces some of the same threats as the wild bears near his Alaskan village of Wales, on the westernmost tip of the North American continent. As sea ice diminishes and temperatures creep up year after year, Agnaboogok and the polar bears—and everyone and everything else living in the far north—are being forced to adapt. Not all of them will succeed.
