The City of London financial district is seen from Primrose Hill as high air pollution obscures the skyline. April 10, 2015.
As such, Romania sees the greatest impact from environmental factors with one in five deaths linked to pollution, while countries like Sweden and Denmark see one in 10. "This is linked to where they live, work and go to school, often in socially deprived urban neighbourhoods close to heavy traffic," it added.
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