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MIAMI: Global warming is expected to unleash more rain, exposing millions of more people to river flooding, particularly in the United States and parts of Asia, Africa and central Europe, researchers said on Wednesday.

The study in the journal Science Advances calculates how much more flood protection will be needed to keep the risks of high-end floods constant in the next 25 years.

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Unless actions are taken — such as enhancing dykes, boosting building standards, relocating settlements and managing rivers — the number of people affected by devastating floods could skyrocket, warns the report, based on models that are 10 times more precise than commonly used climate computer simulations.

Asia would get hit the hardest, with the number of people affected by flooding projected to go from 70 to 156 million by 2040, it said.

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