
In "Nomad Century," Gaia Vince offers a radical blueprint for surviving climate upheaval through migration. Hailed as "the most important book" by Mary Roach, this Financial Times Best Book of 2022 challenges us: What if mass migration isn't our downfall, but our salvation?
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By 2070, extreme heat and humidity will make vast regions of our planet uninhabitable for 3.5 billion people. This isn't speculation-it's already unfolding. The Greenland ice sheet approaches a tipping point. Twenty-eight trillion tonnes of land ice have vanished in just twenty-five years. Sea levels will rise at least two meters by century's end, eventually reaching ten meters as ice sheets collapse. A wide equatorial belt will experience intolerable heat stress, while expanding deserts stretch from the Sahara through southern Europe. What makes this crisis particularly insidious is how climate change multiplies every other problem. Heat proves more deadly than fire despite its less dramatic appearance. The world now experiences twice as many days over 50C than thirty years ago. When combined with humidity, heat becomes especially lethal-sweat can't evaporate to cool the body. At wet-bulb temperatures above 35C, even fit people die within hours, a threshold already briefly crossed along the Persian Gulf and in river valleys of India and Pakistan. By century's end, simply going outside for a few hours in parts of India and eastern China will result in death even for the fittest humans.
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