David Abulafia David Abulafia

Our future life on Earth depends on the state of the ocean

As the world’s thermometer, the ocean keeps everything in balance, but our actions are threatening its life, says Helen Czerski

Although we divide the ocean into several different ones, it is ultimately – as the ancient Greeks insisted –one big connected Okeanos. [Alamy]
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  • Blue Machine: How the Ocean Works

    Helen Czerski

    Torva, pp. 448, £20

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