Slums rise in cities as Bangladesh climate refugees soar in number



Experts say that Bangladesh, an impoverished delta nation of 170 million people is set for the biggest displacement in human history — due to climate change. Global sea level has gone up 20 centimetres since 1900, and could rise two to four times that much by the end of this century depending on how quickly humanity draws down carbon pollution, according to the UN climate science panel.


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