The Great Derangement: Climate Change and the Unthinkable. Amitav Ghosh. Penguin Random House India. 275pp. ₹399. 2016. ISBN 9780670089130 When the Swedish astronomer Pehr Wilhelm Wargentin put a thermometer outside his window in January 1756 to begin measuring average monthly temperatures, he began one of the world’s longest observation series.
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