Today we can ponder what our region might have been like had we not reversed the Chicago River. It's a puzzle we're grappling with now as we contemplate carp, climate change, and a livable city for the 21st century.
Asian carp alarmists have fixated on Chicago's waterways as the lone path for the fish to enter the Great Lakes. But recent discoveries of carp in Wisconsin and Iowa underscore that we cannot simply focus on aquatic pathways.
We have heard repeatedly from the carp team that the electric barrier erected by the Corps to shoo away the invaders, by shocking the water, is keeping the fish out. But evidence shows it doesn't really work.