Five Great Lakes states are suing Illinois to force it to close two shipping locks. But US officials are pursuing other ways to keep Asian carp out of the Great Lakes, and even the Chicago mayor has a proposal.
The Asian carp has gobbled up headlines as it makes its way toward the Great Lakes. Six frequently asked questions about the invasive species of fish.
Invasive Asian carp traveled up the Mississippi River to Lake Michigan, threatening the regional economy as well as the environment.
Environmentalists express opposition to a federal plan developed this week to keep invasive Asian carp out of the Great Lakes.