London builds on stilts to counter the threat of river flooding; Paris searches for ways to beat the heat after 15,000 deaths in France in 2003's heatwave; Shanghai and Mumbai's economic expansion could be threatened by typhoons and monsoonal flooding; and a South Pacific isle is harbouring the first climate-change, environmental refugees. As the world swaps theories on global warming, this disguieting film in the Climate Chaos season, based on scenarios forecast by experts on climate prediction, examines how prepared threatened cities are for catastrophe. Producer Eamon Hardy ; Exec producer Karen O'Connor