Lake Erie In Ontario Has Turned Green, And The Cause Is Phosphorous And Algae

Image: Landsat 8 via The New York Times

There’s something strange happening in one of the Great Lakes. The waters are changing color, turning from their usual blue to a strange, ethereal green. Sure, it might look beautiful, but the cause of the new hue is actually something to be really concerned about. And it may well be getting worse.

Image: Phizzy

When it comes to surface area, Lake Erie is the fourth biggest of the five Great Lakes. In global terms, it’s the 11th biggest lake in the world, covering an area of nearly 10,000 square miles. At its longest point the lake stretches way over 200 miles, and at its widest it’s nearly 60 miles from shore to shore.

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