The smoke from Canada’s wildfires has drifted south, prompting air quality alerts for tens of millions of Americans. Jackson Proskow looks at the thick haze blanketing New York and Washington, D.C., and why the smog isn’t expected to go away anytime soon.
- Canada’s wildfires to get more U.S. aid after Biden speaks with Trudeau
- IN PHOTOS: A look at how bad air quality is across North America