Stark Evidence: A Warmer World Is Sparking More and Bigger Wildfires

On a single hot, dry day this summer, an astonishing 140 wildfires leapt to life across British Columbia. “Friday, July 7 was just crazy,” says Mike Flannigan, director of the wildland fire partnership at the University of Alberta. A state of emergency was declared. By the end of summer, more than 1,000 fires had been triggered across the Canadian province, burning a record nearly 3 million acres of forest—nearly 10 times the average in British Columbia over the last decade. As the fires got bigger and hotter, even aerial attacks became useless. “It’s like spitting on a campfire,” says Flannigan. “It doesn’t do much other than making a pretty picture for the newspapers.”

Forest fires are natural. But the number and extent of the fires being seen today are not. These fires are man-made, or at least man-worsened.

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