‘Wildfire smoke is the fastest-growing environmental threat in the US’: How a warming world will poison the air we breathe

As wildfires raged through Ontario, Canada in mid-July, millions of people in the Midwest and on the East Coast found themselves under a shroud of yellow skies, darkened by smoke from the infernos. The air quality index in Grand Rapids, Michigan hit 616 on July 16, breaking the previous record for the city of 350; [...] The post ‘Wildfire smoke is the fastest-growing environmental threat in the…