The U.S. Army Corps of Engineers announced last week that it would speed up its five-year study on potential options for preventing Asian Carp from entering Lake Michigan. 
While a number of different methods have been proposed over the years, with some of them in use already, the U.S. Army Corps of Engineers seeks to provide Congress with a number of options, and will now work to do so by next year. Previously the expected date had been 2015. 
Asian Carp are an aggressive, invasive species, and are currently being kept out of the lake by electric barriers and certain other methods. 
Learn more about the Asian Carp threat on our site, and by visiting the Asian Carp Regional Coordinating Committee.