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b'The cultural history of clouds seemed to be shaped by amateurs \\u2014 the likes of Luke Howard and the Honorable Ralph Abercromby \\u2014 each of whom projected the ethos of his particular era onto those billowing blank slates in the troposphere. Gavin Pretor-Pinney was our era\\u2019s.\\n\\nOn today\\u2019s Sunday Read, the story of the Cloud Appreciation Society and how Mr. Pretor-Pinney, backed with good will, challenged the cloud authorities.'