From the Clyde to the Seine, rediscovering Glasgow's history of urban swimming could help shape the future of swimmable cities

In August 1879, around 6,000 spectators lined the banks of the River Clyde in Glasgow, Scotland, to see two teenagers called Elizabeth and Minnie swim half a mile. Now, 145 years later, there's a growing global movement to revive urban waterways - rivers, harbours and canals - as safe swimming spots for city dwellers.

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