Biologists Hope Electricity Can Foil Invading Fish

A bighead Asian carp.

hide captionA bighead Asian carp.

» See a Video of Asian Carp in Action
David Schaper, NPR

Engineers and biologists are testing a new electric barrier underwater near Chicago, hoping to prevent Asian carp from entering the Great Lakes. Two breeds of Asian carp are rapidly moving up the Mississippi River basin, and have been found just 50 miles from Lake Michigan. NPR's David Schaper reports.

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