'We cannot slow down': wildfire efforts continue as rain persists in Sask.

Colder than the Arctic Circle: Harsh pattern sweeps most of Canada this week

Nearly 40°C: Early season heat wave continues to impact B.C.

Why the world's oceans are getting darker

Trees may be able to help us predict volcanic eruptions

More Northern Lights displays possible across Canada tonight

Earth's CO2 levels just broke another record. Here's what that means

Busting bin myths: What really happens to your recycling in Manitoba

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

Rare black iceberg spotted off Labrador coast has social media buzzing

Heroic pelican rescue caught on camera

Beware of giant hogweed, officials say, as battle to kill it drags on

Study: Time in nature reduces pain symptoms for people with chronic back pain

Combat wildfire smoke: Build your own indoor air filter for cleaner breathing

Surprising number of Canadians have a deficiency of this key vitamin