Massive California wildfires take a toll on air quality

The Mendocino Complex is a fire of unprecedented size, but the scenes are strikingly familiar: thick haze, homes charred, evacuees at shelters. At its peak, the fire displaced almost 20,000 people, and there are more than a dozen more blazes burning across California. Special correspondent Cat Wise joins William Brangham from Ukiah to discuss how the fires are affecting air quality.