Posted AT 2:12 PM EDT on 18/07/07
Zebra mussel's impact anything but clear
After becoming so badly polluted it was labelled a “dead lake” in the 1960s, few would have imagined the waters of Lake Erie would one day be compared to the vibrant hues of the Caribbean.
But in an ironic twist of fate, a destructive invasive species that entered the Great Lakes about 20 years ago has created increasingly clear waters, leaving many to reasonably assume the lakes keep getting cleaner and healthier.
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