‘H Is for Hope’ explores history of climate change and why there’s hope for the future

Data shows that global levels of the three main heat-trapping greenhouse gases - carbon dioxide, methane and nitrous oxide - all reached record highs in 2023 for the second year in the row, and experts say there’s no end in sight. But a new book, ‘H Is for Hope,’ says there is reason for hope in the fight against climate change. William Brangham speaks with its author, Elizabeth Kolbert.
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