Fall’s colorful shift: expert explains why some leaves change and some don't

Fall’s colorful shift: expert explains why some leaves change and some don't

We are well into fall, and many trees have shed their leaves. Some, though, have kept their foliage due to a warmer-than-usual November. So why do leaves fall and change color?Kai Battenberg is a botany teacher and collections manager of Stillinger Herbarium at the University of Idaho. He says there isn't any specific reason for the erratic color changes, but a combination of factors that come into play. WATCH | To learn more about how leaves ch…