Articles on Lakes

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Thermokarst ponds, or trough ponds, typically form when the ice in permafrost melts. They can also drain quickly. Anna Liljedahl

Disappearing lakes and AI are helping scientists map Arctic permafrost thaw in near‑real time

The abrupt disappearance of a lake is one clear sign that the ice below is melting, and a clue to wider permafrost changes.
Trees burned by wildfires in Flin Flon, Man., in June, 2025. THE CANADIAN PRESS/Mike Deal-Pool

New research highlights how wildfires are harming fish

Research shows that wildfires are causing more debris, sediment and chemicals to enter waterways, harming fish and other aquatic life.
Scientist Aubrey Hillman, one of the authors of this article, extracts a core of mud from the bottom of Black Pond in June 2025. Patrick Dodson/University at Albany

Industrial pollution once ravaged the Adirondacks − decades of history captured in lake mud track their slow recovery

Acid rain and metals from power plants, vehicles and industries reached remote mountain lakes for years. Evidence from those lakes today shows the success of the Clean Air Act.
An aerial view of Cape Town city. GettyImages

Cape Town’s sewage treatment isn’t coping: scientists are worried about what the city is telling the public

Current science communications in Cape Town are not serving the public well.
A ladder on a dock is pictured next to Lake Massawippi in the Eastern Townships west of Montréal on Oct. 17, 2024. THE CANADIAN PRESS/Graham Hughes

To truly understand the health of a lake, you must look well beyond its shoreline

A lake or river is not an isolated entity but one of the most visible facets of a much larger, and more dynamic, watershed. The health of these entire systems should be an utmost priority.
A close up image of a spiny water flea. An invasive species in North America, the spiny water flea has caused extensive damage to freshwater ecosystems across Canada. (Sam Lucy Behle)

How the invasive spiny water flea spread across Canada, and what we can do about it

The invasive spiny water flea is spreading fast across Canada. Awareness is key to curtailing its growth.

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