Scientists Find Tiny Exfoliating Beads In Great Lakes Fish Guts

Tiny plastic beads used in some cosmetics and toothpaste are making their way into the bellies of fish in the Great Lakes, and it's raising concern among environmentalists. Dr. Sherri Mason, a chemistry professor at the State University of New York at Fredonia, has been researching the issue, and she joins Audie Cornish to explain what this means for the Great Lakes ecosystem.