• Thomson Reuters Foundation

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High humidity will magnify the effects of rising heat from South America to India, affecting people’s ability to work and even survive, unless greenhouse gas emissions are substantially cut in coming decades, according to U.S. researchers.

Heat remains underestimated as a threat by governments, aid agencies and individuals, and muggy heat is even more oppressive than the “dry” kind, because it stops people from sweating, which takes away excess heat.

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