As wildfires multiply, a new era of air pollution

NEW YORK, Aug 24 — From Quebec to British Columbia to Hawaii, North America is facing an extraordinary wildfire season — and regions both near and far have found themselves increasingly blighted by smoke exposure.One of the defining aspects of smoke from wildfires is “particulate matter” — toxins that, in their numbers, can make smoke visible.

Also of concern are invisible substances known as volatile organic compounds such as butane and benzene. These cause eye and throat irritation, while some are known carcinogens. Based on the two dozen studies published “there seems to be a greater proportion of respiratory versus cardiovascular effects of smoke as compared to traffic pollution,” he told AFP.Carlsten’s lab has begun conducting human experiments with wood smoke to gain more clarity.

Another is mental “acclimatisation,” a byproduct of evolution that helps us cope with new stressors, but if we’re not careful can inure us to dangers, much like the proverbial frog in boiling water.

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