Environment Canada

Last Wednesday, a team of people from the Lake Ontario Waterkeeper environmental group descended on the Toronto harbourfront looking for any signs the previous night's massive, flash-flood rainfall had caused the city's ancient combined sewer system to overflow into the lake. They didn't need to dip a single test tube into the water to know it had.

Quebec health officials say at least 54 people are now believed to have died from heat-related complications.

Montreal health officials are blaming the heavy heat and humidity for at least six deaths in recent days.

A cluster of tornadoes that knocked down trees and tore the roof off a home in southern Quebec last June was one of the largest ever recorded in Canada, according to new research from Western University.

A caribou researcher says Alberta's decision to suspend portions of its draft plan to help the threatened animals recover is the first major test of the federal Species at Risk Act.

A small steeple that's a part of Halifax's urban landscape toppled early on Wednesday, March 14, 2018, in a fierce winter storm that left thousands of Maritimers facing power outages, school closures and flight cancellations.

Federal Public Safety and Emergency Preparedness Minister Ralph Goodale says Ottawa is working with Toronto and Ontario officials to help ease an unprecedented strain on Toronto's homeless shelter system as temperatures fall to new lows.

Organizers cancelled two New Year's Day polar bear dips in Ontario because of the frigid temperatures, but not even a layer of ice could stop hundreds of people from plunging into the freezing waters of Herring Cove, N.S.

About 1,100 customers were still without power late Monday, January 1, 2018, as crews worked to restore electricity after ice storms swept through British Columbia's Fraser Valley.

Bitter cold enveloping much of Canada has reduced the number of skiers on the slopes during the key Christmas holiday season, blunting industry optimism boosted by good early snow conditions and strong foreign visitor interest due to the weak Canadian dollar.

Environment Canada says it's not about how cold it is, but how long this wave of frigid air will stay around that's unusual.

Environment Canada is investigating allegations that fish plants in British Columbia are spewing virus-laden bloody water from processed, farmed salmon into the water off the coast of Vancouver Island.

Canada’s oilpatch could get a big head start on reducing emissions of a powerful greenhouse gas for a "near−zero" cost, says an academic study on the price of methane reduction.

New tests have found a wide range of previously undiscovered contaminants in polar bears around Hudson Bay.

Even though the Energy East project review has been suspended, Environment Canada made an offer to the NEB to study the climate change impacts of the proposed pipeline.