About 23%, or 1.7 billion, of the world's population saw their heat exposure increase in 2016
, found that previous studies significantly underestimated extreme heat exposure, particularly in the tropics and rapidly growing parts of the world, such as sub-Saharan Africa, the Middle East and southern Asia.The scientists had to overcome a paucity of data in parts of the globe, including India and sub-Saharan Africa.
Cities that saw climate change drive much of the increase in exposure include Baghdad , Lagos , Kolkata and Mumbai . The research calls into question whether the urban poor will be able to rise to greater levels of prosperity, since extreme heat has been tied to drops in economic output."The most surprising thing our study found was the sheer scale of change in urban extreme heat exposure globally," study lead author Cascade Tuholske of Columbia University told Axios.
Tuholske views this as hopeful research, since known strategies, from early warning systems to green roofs and planting trees in urban areas can all help reduce the effects of urban heat islands and cut down on any heat-related fatalities.
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