Smoky skies in Toronto have led to new scrutiny of government efforts to fight fires and manage forests. But scientists say the realistic way to tackle the smoke is fighting climate change itself.

Canada will not hit carbon emission reduction targets set under the Trudeau government, Prime Minister Mark Carney said Tuesday, arguing that downgrading the country's climate-change ambitions is nece...

A prolonged, dangerous heat wave will intensify across most of the central to eastern U.S. this week, the National Weather Service said.

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