Articles on Great Lakes

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The Elbe River in Magdeburg, Germany, on Aug. 8, 2026. The river, which flows through the Czech Republic and Germany, saw record-low water levels amid intense droughts and heatwaves across Europe. (Roy Zuo/Wikimedia Commons)

Data centres and democratic decline could lead to more water conflict in the future

To protect our planet’s waters, we need to better understand these new economic and technological factors that underlie disputes over water.
A section of Enbridge’s Line 5 runs along the bottom of the Straits of Mackinac in Michigan. Michigan Department of Environment, Great Lakes and Energy via AP

A Great Lakes oil pipeline faces 3 controversies with no speedy resolutions

The disputes raise questions about the region’s economy and environment, as well as national priorities over energy, water, climate and Indigenous rights.
This well was contaminated with high levels of PFAS from firefighting foam used at a small airport nearby. Brian van der Brug/Los Angeles Times via Getty Images

You can be exposed to PFAS through food, water, even swimming in lakes – new maps show how risk from ‘forever chemicals’ varies

PFAS exposure can vary significantly from one community to the next. A close-up view of three Great Lakes states offers some insights for everyone.
The United States’ offshore wind potential isn’t just in the ocean, where these turbines are located, off Rhode Island. John Moore/Getty Images

Great Lakes offshore wind could power the region and beyond

States take the lead on regulation of planning, site selection, leasing and other elements of offshore wind projects in the Great Lakes, though the federal government has a role as well.
A family fishes on Lake Erie during an algal bloom, Sept. 4, 2024, in Toledo, Ohio. Warmer winters are leading to longer, and more frequent, bloom periods. (AP Photo/Joshua A. Bickel)

Warmer winters are fuelling a growth in algal blooms across the Great Lakes

Algal blooms are typically associated with summer weather but warmer winters caused by climate change are resulting in blooms appearing more frequently, and for longer periods.
A dense cyanobacterial bloom is seen in the Kyiv Water Reservoir during an extreme heatwave near Kyiv, Ukraine in November 2020. While common across the world, Lake Superior has historically been too cold to host cyanobacterial blooms — until now. (AP Photo/Efrem Lukatsky)

Climate change is causing algal blooms in Lake Superior for the first time in history

The spectacular landscapes and pristine waters of the north shore of Lake Superior, which once provided inspiration for the Group of Seven, are now vulnerable to algal blooms.
Invasive species (including the plant species, Eurasian watermilfoil, pictured here) pose a real risk to many of Canada’s freshwater habitats. (Shutterstock)

Invasive species are reshaping aquatic ecosystems, one lake at a time

Freshwater ecosystems in Canada, and around the world, are more fragile than they look and vulnerable to invasive species. Canada’s lakes and rivers require constant vigilance to protect from invasion.

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