From the WSJ via How Appealing:
![[SEPARATE]](https://i0.wp.com/sg.wsj.net/public/resources/images/NA-BE297_SEPARA_NS_20100215193223.gif)
More than a century ago, this city reversed the flow of its eponymous river, connecting the Great Lakes with the Gulf of Mexico and defining itself as the can-do capital of the American heartland.
Today, that engineering feat is coming under growing scrutiny, as scientists and politicians intensify their battle against a voracious flying fish that has been traveling up the Mississippi for 20 years. Amid signs that Asian carp have breached the last defensive barrier, calls are mounting for a massive do-over.
“We know these barriers aren’t working,” said Joel Brammeier, president of the Alliance for the Great Lakes and the lead author of a 2008 report that laid out how this project might look. “An ecological separation is the only permanent solution.”


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