Asian carp: how one fish could ruin the Great Lakes

Christian Science Monitor: The Asian carp's presence is highly contentious in the Midwest, with ramifications that could affect the economy as well as the environment. Here's a primer on the Asian carp and why this invasive species poses such a threat to the Great Lakes ecosystem. What is the Asian carp?It's a collective term that describes four species of fish that originated in China but have shown up in the United States: the silver, bighead, grass, and black carp. The bighead and silver carp are the ones ......

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