How ecosystem changes impact whitefish in the Great Lakes

Changes in ecosystems have transformed the fishing industry, and that's bad news for whitefish in the Great Lakes. The fish is an important and popular commercial species, but its numbers in some of the Great Lakes have plummeted. Now, scientists are trying to get the fish to spawn in rivers for the first time in well over a century.

Environment reporter Ellie Katz from Interlochen Public Radio reports.