Chicago Mayor Richard Daley prompts an interesting question:
Is chemical or biological pollution the greater threat to Lake Michigan?
The mayor used the Kalamazoo River oil spill to attempt to turn the table on critics urging Chicago to close the route for invasive Asian carp.
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Long-term warming of the Great Lakes climate is melting the ice from Minnesota lakes earlier in the year.
As those “ice-out” dates move farther up the calendar, they may be disrupting the reproduction of a popular sport fish.
It’s not yet clear how that will affect the fish, but it has the potential to cause a few problems.