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Lock and Dam Changes Aimed at Stopping Invasive Carp
The U.S. Army Corps of Engineers has adjusted the flow of water through a Mississippi River lock and dam in southeastern Minnesota in an effort to slow the spread of invasive carp, which have been discovered as far north as Redwood Falls in the Minnesota River.

The changes to Lock and Dam 8 near Genoa, Wisconsin, were based on recommendations from a research team led by Peter Sorensen, a University of Minnesota professor and expert on invasive carp.

Sorensen said it's the first time the Corps of Engineers has adjusted a dam's operations to prevent the spread of an invasive species.



 
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How Does Trash End Up in the Ocean? - Trash of all kinds exists in the ocean – clean-up crews have found cigarette butts, glass bottles and even mattresses. But the most common type of trash found in the ocean’s gyres (circular currents formed by wind patterns and the earth’s rotation) is tiny pieces of broken down plastics, known as microplastics.


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