Toronto has seen the worst air quality of major cities in the world on Wednesday as southern Ontario is blanketed by smoke from wildfires. Global News meteorologist Anthony Farnell said the plume ...

Toronto's medical officer of health, David McKeown, has released a new study that points the finger of blame on air pollution from transportation for 440 premature deaths annually in the city.

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The fact that air pollution caused by cars and trucks ... A new study, led by University of Toronto atmospheric chemist Jennifer Murphy, shows a key component of the process is the soil beneath ...