Millions warned as wildfire smoke returns to Ontario skies

Heavy rains, significant July cooldown on tap for Alberta

PHOTOS: Supercell hits Calgary area with hail, torrential rains

How the Great Lakes can trigger storms on a hot summer day

Canada's fire bans and danger ratings explained

An alien comet is now passing through our solar system. Here's what we know

How seawater and limestone could be used to reduce maritime emissions

Climate-proofing homes more important than ever, say experts

We don’t know what happens to the waste we recycle, and that’s a problem

Rare blue lobster found on beach in Prince Edward Island

More great white sharks in Canadian Atlantic waters isn't cause for concern

Parts of Alberta treated to 'night-shining clouds,' the rarest cloud type

Indoor PM2.5 spiked above safe levels during June wildfire smoke, report shows

How hot weather can worsen some pre-existing health conditions

A symphony of storms: How Mother Nature rocks in the ultimate ride