Lightning bolts, smart toilets and radical pottery – the week in art

Printmaking genius Hokusai is at the British Museum, the Turner comes to Coventry, and ancient nomads pitch up in Cambridge – all in your weekly dispatch

Hokusai: The Great Picture Book of Everything
A unique cache of drawings by one of the world’s best-loved artists offers a closer look at the genius who created the Great Wave.
• British Museum, London, from 30 September

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