How North American cities are bracing for more heatwaves

How North American cities are bracing for more heatwaves

The world has already warmed by about 1.2C since the industrial era began, which “doesn’t sound like much”, says Columbia University climate scientist Radley Horton, but it has “profoundly shifted the statistics of heatwaves, making them much more common, much more extreme and much longer duration”.

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