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This summer, many parts of the world have seen devastating flooding, from New Orleans and New York, to the UK, Germany and Belgium. More than 300 people lost their lives in floods in central China, including a number who were trapped in a subway train in the city of Zhengzhou. Professor Hannah Cloke of the University of Reading is a natural hazards researcher and hydrologist, who spends her time trying to prevent these terrible losses. She models where flooding is likely to happen and advises governments.

Hannah Cloke talks to Jim al-Khalili about how her fascination with the water on the earth goes back to her childhood – her memories of holidays for instance all revolve around swimming or building dams on the beach. She is now passionate about finding new ways of telling the public about the dangers of flooding, which includes writing poetry.