Explainers
'Training' thunderstorms lead to flash flooding in Ontario, but what are they?
Severe
Torrential downpour floods streets across London Monday morning
Forecasts
Flood, severe storm threat with possible rotation before heat breaks in Ontario
Calgary eyes moving to Stage 2 water restrictions with bringing new pump online
Animals
Study reveals why some people are mosquito magnets and others aren't
How does hail get so big?
What happens when El Niño and La Niña disappear?
After Earth's year of historic heat, how close are we to passing 1.5 C limit?
Summer Games organizers vow their 'greenest' affair to combat heat
How much microplastics are inside humans? New film unveils a figure
Honey, I'm hot! What summer heat does to honeybees
U.S. documents first local extinction due to sea level rise
Explore the Rolling Hills of the East Coast: Cape Breton awaits
How hot weather can worsen some pre-existing health conditions
AQI, AQHI, and your health: Air quality ratings explained