Climate change could be altering northern ecosystems more quickly and profoundly than anyone surmised, suggests a study that focused on a large Arctic lake.

Glacial changes have caused Kluane Lake water levels to drop so low the dock is unusable.

New research led by U of T Mississauga geographer Igor Lehnherr provides startling evidence that remote areas in Canada's Arctic region—once thought to be beyond the reach of human impact—are responding rapidly to warming global temperatures.

If you factor in wildlife changes, it could be even more.

Lake Ontario and St. Lawrence River water levels are expected to stay above average into the spring, following record levels last year that led to extreme flooding in Central Canada.

The storm dropped more than a foot of snow overnight in some places, making for a messy Thursday morning commute. And the nor’easter isn’t gone yet.

Northern freshwater lakes are turning brown as permafrost thaws and introduces more organic carbon into the water, according to a new study published in the journal Limnology and Oceanography Letters.

Sweden and its neighbouring countries are not meeting targets to save the Baltic Sea, and one of the people involved in coordinating the work tells us why it is so hard to stop problems lilke fertilizer run-off.

A massive landslide that was first discovered last fall blocked a waterway west of the Mackenzie River. Scientists say it's something that could happen more often in the territory as the climate warms up.

From Massachusetts to Virginia, the East Coast was pounded by a storm that threatened to break records. Nearly two million people lost power.

For the community of Jean Lafitte, the question is less whether it will succumb to the sea than when — and how much the public should invest in artificially extending its life.

Officials say the combination of warm temperatures and rainfall is beginning to trigger significant runoff into the Grand River watershed.

The world’s permafrost holds vast stores of carbon. What happens when it thaws?

One of Africa’s richest cities is threatening to turn off the taps to its four million residents, cutting off homes and most businesses.

Power outages have been reported in several Rotorua suburbs.

Packed ice crystals have pushed up water levels on the Kokemäki River, soaking some buildings in Huittinen and Pori.

For the first time, the race will run two laps to its halfway point and back. Mushers agree it’s the safest way to run the race, but it could present challenges.

We will have more wacky weather in 2018 as the world continues to warm.

How will climate change affect health in Alaska? Dangerous travel conditions could cause more accidents, warmer temperatures could spread new diseases and the topsy-turvy weather could worsen mental health. Those are some conclusions from a new state report released Monday. Listen now

The powerful winter weather storm was slamming into Massachusetts by mid-morning Thursday, bringing blizzard-like conditions in some areas, torrential rain in others, power outages and hurricane-strength winds on Cape Cod and the Islands.