Credit: A bighead carp, like one found after a poisoning project this week. U.S. Geological Survey . An emergency operation to stop invasive Asian carp from reaching the Great Lakes used more than 2,000 gallons of rotenone to poison six miles of a canal near Chicago this week. Tens of thousands of fish were killed. Just … Read the full story on TreeHugger

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Was it Worth It? One Asian Carp Found After Six Miles of River Poisoned in Illinois