Hazardous severe storm risk reignites across northern Ontario, Quebec

Storm downs trees, knocks out power in Mattawa, Ont., area

Ontario continues to simmer amid dangerous record-breaking heat

The science behind spectacular Canada Day firework displays

What is a mesoscale convective system? How an 'MCS' can spell danger

Hair suddenly standing straight up? Take cover immediately

Startup sells plastic-eating fungi diapers to tackle landfill waste

Canadian heat waves far more likely in the era of climate change

May was world's second-hottest on record, EU scientists say

Phytoplankton, key to ocean life, falling 2% per year in North Atlantic

Researchers detect blue-green algae toxin in Lake Erie earlier than ever before

2 people now confirmed dead in Bow Glacier Falls rockfall in Banff National Park

No air conditioner? Here's how to keep cool during extreme heat

Extreme heat ahead: Heat stroke warning signs to watch for

From drips to disasters: How to flood-proof your home