Cities affected included New York, Cleveland and Chicago.
The onslaught has led to another round of media headlines and press releases from environmental and public health groups asking whether the nation is at a tipping point of urgency to fight climate change.
Health experts have suspected since the early days of the pandemic that a link existed between air pollution and the likelihood of catching the disease and experiencing a more severe infection.
Wildfire smoke is a problem because it contributes to air pollution.
As thousands of evacuees fled to the beaches, conservative Prime Minister Scott Morrison is facing growing outrage for his inaction on climate and close ties with the coal industry.
"Climate change is influencing the frequency and severity of dangerous bushfire conditions in Australia and other regions of the world."
The growing fire crisis means it’s vital western science and Aboriginal knowledge are brought together to make communities as fire-safe as possible.
Interior Secretary Ryan Zinke wrote an op-ed last week in USA Today about forest management on public lands that blamed “radical environmentalists” for the fires.
According to some estimates, California avoids spending about $80-$100 million a year by using prison labor to fight its biggest environmental problem.
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