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Canada Wildfire

Photo: Smoke from a wildfire
A towering smoke cloud rises from a forest fire near Jasper, Alberta, Canada. Since the 1930s, fire suppression in Jasper National Park has created an unnaturally old forest and increased the risk of large, catastrophic outbreaks. Recent efforts by Parks Canada to rectify the situation have focused on low-impact logging and thinning of vegetation and debris that clog the forest floor.
Photograph by Todd Gipstein

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