With wildfires growing in size, frequency, and intensity, more and more people are being exposed to their smoke, sometimes thousands of miles from the flames. In the wake of recent historic fires in Canada and the United States, a growing body of research is showing how harmful that smoke can be to human health.

With wildfires growing in size, frequency, and intensity, more and more people are being exposed to their smoke, sometimes thousands of miles from the flames. In the wake of recent historic fires in Canada and the United States, a growing body of research is showing how harmful that smoke can be to human health.

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