Coastal cities face their mortality on the climate 'frontline'
Domination of the seas allowed many coastal cities to become trading powerhouses and cultural melting pots. But now that strength is becoming a liability as climate change swells the oceans, redrawing the map and putting hundreds of millions at risk.
Rising seas will likely spark mass migration and eventually force whole cities to be abandoned to the flood. But profound consequences for megacities, small islands, arctic communities and deltas will come long before that -- well within the lifetimes of most alive today.
But if sea levels rise 30 centimetres, floodwaters could slosh around the palazzi for several weeks. At 75 centimetres, they could linger for six months.
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