A new study of more than 13,000 cities worldwide has found that the number of person-days in which inhabitants are exposed to extreme combinations of heat and humidity has tripled since the 1980s. The authors say the trend, which now affects nearly a quarter of the world’s population, is the combined result of both rising temperatures and booming urban population growth. The study was published today in the Proceedings of the National Academy of Sciences.
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Source: Phys.org