A study found that more than two dozen US coastal cities are sinking by more than 2 mm per year. It is a similar picture around the world. Almost half of China’s major cities, as well as places like Tehran and Jakarta, face similar problems. These problems are exacerbated by sea level rises caused by global warming. Madeleine Finlay talks to Prof Manoochehr Shirzaei from Virginia Tech University and Prof Robert Nicholls from the University of East Anglia to find out what is sinking our cities and whether anything can be done to save them from the sea
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