CHICAGO — Connections engineered more than a century ago between the Great Lakes and the Mississippi River watershed should be changed to block the advance of invasive species that can cause irreversible damage, an environmental advocacy group says.
Separating the two basins is the only way to stop the transfer of some species, including the voracious Asian carp that is within 50 miles of Lake Michigan, says a feasibility study issued Wednesday by the Alliance for the Great Lakes.
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