SMUG ECO-WARRIORS may think they're curbing global warming with their vegan diets, charged-up Teslas, and rooftop solar panels. But according to Peter Wadhams, head of the Polar Ocean Physics Group at the University of Cambridge, we're barely staving off disaster. He should know: The pessimistic professor has been studying sea ice for nearly 50 years. "Reducing our emissions is not going to be enough to prevent catastrophic consequences," he says. In his scorching new book, A Farewell to Ice, he presents a slew of radical—and sometimes theoretical—ways to save civilization.
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