(MI) Detroit Free Press - Closing a 5 1/2 -mile stretch of waterway and poisoning it is not something to take lightly. But it’s more than justified by efforts to keep Asian carp out of the Great Lakes.

Starting Dec. 2, a multi-agency task force will close off a portion of the Chicago Sanitary and Ship Canal below the two electrical barriers intended to stop the carp from advancing out of the Mississippi basin and into Lake Michigan and the rest of the lakes. While the U.S. Army Corps of Engineers turns off the newer, bigger barrier to inspect it, the Illinois Department of Natural Resources will put a fish poison in the water and haul the carcasses to a landfill. More