Why Are so Many Gray Whales Washing up Dead in California?

Federal scientists say they will investigate why an unusual number of gray whales are washing up dead on West Coast beaches. About 70 whales have been found dead so far this year on the coasts of California, Oregon, Washington and Alaska, the most since 2000. In the Bay Area alone, at least 13 dead whales have washed ashore. We’ll talk with the Marine Mammal Center’s Bill Keener about what’s going on and why it’s happening.