PARK RAPIDS, Minn. — The Minnesota Department of Natural Resources has confirmed the presence of zebra mussels, an aquatic invasive species, in Fish Hook Lake north of Park Rapids. In October, the DNR ...

… 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 ...

Walleyes and perch taken from Minnesota lakes infested with zebra mussels contain starkly higher levels of mercury than those taken from uninvaded lakes, according to new University of Minnesota ...

A tiny fish is helping scientists understand how the anesthetic drug ketamine relieves depression. NPR's Jon Hamilton reports on research showing how ketamine altered the brain of a zebrafish. JON ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. OKLAHOMA CITY (KFOR) – Genetic mutations in ...