Coal-tar sealant, a commonly used application in parking lot and other pavements, is known to be harmful to humans, and threatens to enter watersheds and Great Lakes waterways as well. That is why lawmakers in three Great Lakes states are considering or proposing a ban on the substance in order to protect those waters. 
 
“Negative effects on fish and other aquatic animals include inhibited reproduction, fin erosion, liver abnormalities, cataracts and death, according to Geological Survey reports.
 
Coal-tar sealcoat makes up about half of the PAHs in lake sediment, according to Environmental Science and Technology. It is why PAH levels have increased in the sediment of urban and suburban lakes since 2000 even when other major PAH producers, like power plants, have been decreasing emissions.”
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Looking for engaging, place-based literacy resources this school year? The Great Lakes: Our Freshwater Treasure by Barb Rosenstock is a beautifully illustrated dive into the geology, ecology, and history of our Great Lakes—perfect for sparking curiosity in learners of all ages. 📖 Learn more at the link in bio.#GreatLakes #BookRecommendation #TeachingTuesdays@brosenstock
Shorelines never stop moving.Our new video series, Shaping the Shoreline, shows how water levels, waves, storms, sediments, and structures like revetments, seawalls, and groins shape the Great Lakes coast.Clear, quick videos designed for coastal decision makers and anyone curious about coastal change.Watch now at the link in bio.
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