Zebra mussels were brought to the Great Lakes in ship ballast water during the 1980s. They were joined shortly after by Quagga mussels in the early 90s. Today, both are among the most serious aquatic ...

… but our independent journalism isn’t free to produce. Help us keep it this way with a tax-deductible donation today. A decade ago, when news broke that zebra mussels had found their way to Cass Lake ...