Faced with the threat that Asian carp could enter the Great Lakes, Michigan is turning to the public for new ideas and plans to offer a prize to whoever comes up with a way to stop the voracious fish. Michigan's global search challenge comes after the U.S. government and others have spent hundreds of millions searching for a solution to stop the carp from entering the world's largest freshwater system. If they aren't stopped, officials fear the aggressive fish will crowd out prize native fish and hamper recreational boating in large sections of the lakes, which stretch from Minnesota, Wisconsin...