Toronto: Air ranked among world's worst as wildfire smoke chokes city

Wildfire smoke from distant blazes has turned Toronto's air into some of the worst in the world, making it the city with the most polluted skies on Wednesday. This alarming situation has pushed pollution levels far beyond safe limits, overshadowing other heavily polluted cities like New Delhi and Kinshasa. The event underscores the severe impact of climate change and forest fires on urban air quality, highlighting the urgent need for global action to mitigate these environmental threats.