Why night-time heat can be so dangerous – and why it's getting worse

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Why night-time heat can be so dangerous – and why it's getting worse
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Heat waves are coming to include an increasingly dangerous element: overnight temperatures that don’t cool down enough to offer sufficient reprieve from oppressive heat, particularly for people without access to air conditioning.

“We think it’s because as the days grow warmer, there is more moisture in the air that traps the heat,” the

Areas with a lot of green space – with grass and trees that reflect sunlight and create shade – are cooler on summer’s hottest days, she said. Night-time should be when our bodies get a break from the heat, Patel said. But with the climate crisis, it’s becoming less likely to happen. Heat-related deaths could

“We all know what it’s like to try to fall asleep on a hot night – it’s uncomfortable,” Patel said. “We often lose sleep. It is estimated that by the end of the century, we could lose about two days of sleep per year, and it will be worse for people without access to air conditioning.”

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