The shifting weather patterns of today-what we call "global warming"-will far exceed anything our ancestors previously faced. What was it like to live with huge pack-hunting lions, saber-toothed cats, dire wolves, and gigantic short-faced bears, to hunt now extinct horses, camels, and mammoth? Are there lessons for modern people lingering along this ancient trail? In this brand new landscape, humans managed to adapt to unfamiliar habitats and dangerous creatures in the midst of a wildly fluctuating climate. About 15,000 years ago, the weather began to warm, melting the huge glaciers of the Late Pleistocene. Yet shifting weather patterns have threatened humans before, right here in North America, when people first colonized this continent. The future is uncertain, probably fiery, and likely terrifying.
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