Severe thunderstorm threat as hot, muggy air hits southern Ontario

Heat, wildfire smoke and severe storm risk shape Ontario's Wednesday

Canadian wildfire smoke reaches Europe after near 7,000-km journey

More Northern Lights displays possible across Canada tonight

Look up! What's going on in the June night sky?

Show or no show? Canada has some 'wild cards' for northern lights display

Arctic warming seen at three times global average in years ahead: UN agency

How one company plans to suck carbon right out of the air (and make money)

As the Great Lakes warm, researchers say more winter science is crucial

How to get rid of skunk smells, according to chemists

Wildfire smoke prompts closures, warnings in northwestern Ontario

Wildfire evacuation orders to lift Tuesday in Yellowhead County

Does breathing in wildfire smoke mean lung issues for life?

Study finds kids grow faster during school year. Is weather a factor?

More dangerous than snow: Why driving in the rain can be a bigger hazard