Stephen Swanson is a web producer at CBS News Minnesota. Stephen was a floor director for a decade before moving to the WCCO-TV newsroom in 2011, where he focuses on general assignment reporting.

For decades, the signal crayfish has been an ecological troublemaker. It is invasive and widespread across Europe, Asia, and parts of the United States. Recently, researchers at the University of ...

Add Yahoo as a preferred source to see more of our stories on Google. CHAMPAIGN-URBANA, Ill. (WCIA) — University of Illinois researchers studying an invasive species of crayfish recently made a unique ...

Signal crayfish, an invasive nonnative freshwater crustacean species, have been found in a western Minnesota lake, according to the state Department of Natural Resources. The DNR said Friday that this ...

ALEXANDRIA, Minn. — Yet another aquatic invasive species has invaded a Minnesota lake — this time the signal crayfish, a native of the Pacific Northwest confirmed in Lake Winona. The Minnesota ...

The Okanagan Crayfish (Pacifastacus okanaganensis) has been newly described from interior British Columbia and Washington State. Another new species, the Misfortunate Crayfish (Pacifastacus ...

DOUGLAS COUNTY, Minn. (Valley News Live) - The Minnesota Department of Natural Resources has confirmed signal crayfish in Lake Winona, adjacent to Alexandria in Douglas County. This is the first ...

Native crayfish discovered living in a brook in Derbyshire face a "race against time" to be saved from an invading species.

Crater Lake's famously pure water and a newt that calls the lake home are under threat from the explosion of an invasive crayfish, leading to potential action under the Endangered Species Act, the U.S ...