#wildfiresmoke

More than 900 Canada wildfires have burned 3m hectares, spreading smoke abroad as other weather extremes intensify.

Wildfire smoke kills far more people than flames, and hotter, drier weather is making suppression-only playbooks dangerously obsolete.

858 Canadian wildfires are sending hazardous smoke into major US cities, turning a remote fire season into a cross-border health crisis.

Trump is threatening Canada with tariffs over wildfire smoke, turning a real air-quality crisis into a border fight.

Wildfire smoke pushed Chicago and Detroit to the top of dirty-air rankings, turning distant fires into an urban crisis.