As hundreds of wildfires burn across Canada -- many of them out of control -- thick smoke has spread across Washington, New York, and other US cities, reducing visibility, and sending air quality to hazardous levels. I
n this DW News report we examine the growing political dispute between Washington and Ottawa, the impact on millions of people, and the science behind how wildfire smoke can travel thousands of kilometers across North America.
Senior meteorologist Matthew Cappucci of MyRadar explains why these smoke events are becoming more common, how climate change influences wildfire seasons, the health risks posed by prolonged exposure, and why environmental disasters ignore national borders.
