Climate and other environmental changes will cause "major challenges" for world leaders over the next 50 years as mass migration threatens to create new humanitarian crises, a major new report says.
The report estimates there will be between 154 and 179 million people living in rural coastal floodplains by 2060 who will be unable to move away due to poverty
The government's chief scientist, Professor Sir John Beddington, who commissioned the study, said that environmental change would hit the world's poorest the hardest and that millions of them would inadvertently migrate toward, rather than away from, areas that are most vulnerable.
“We have assumed mass migration away from affected areas, but millions of people will also migrate into vulnerable areas and there will also be those who cannot migrate out,” John Beddington, chief scientific adviser to the British government, told reporters.
“They pose different challenges to the international community,” he added.
The United Nations estimates there were 210 million international migrants in 2010. A further 740 million were internal migrants in 2009.
An average 25 million people a year have been displaced due to weather-related events since 2008, which will likely rise as such events become more extreme and frequent, Beddington said
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