Inuit Thule culture expands across Arctic

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Thule whalers from the Bering Strait pushed east along the Arctic coast, displacing the earlier Dorset people as they went. With kayaks, umiaks, and dogsled teams they reached Greenland within a century, bringing toggling harpoons and a taste for bowhead whales. Their ingenious adaptation to polar conditions, including semi-subterranean houses insulated with whale bone and sod, set the template for all subsequent Inuit cultures.