Hour 1: In the last 500 million years, there have been five mass extinctions on Earth. And some scientists are saying we should prepare for the next one. We’ll find out why with New Yorker staff writer Elizabeth Kolbert, who visited geologists, botanists and biologists across the globe in researching her new book, The Sixth Extinction: An Unnatural History.
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Panchthupi, West Bengal, India - October 2, 2021; large areas of West Bengal in India are flooded and flood victims are searching for shelter in small boats. Shutterstock