The Science of Changing Leaves For much of America, this weekend marks the final spectacle of autumn leaves. NPR's Scott Simon talks with color scout Ed Hepborn in Lisle, Ill., about what causes leaves to change colors and what is significant about this fall.
NPR logo

The Science of Changing Leaves

  • Download
  • <iframe src="https://www.npr.org/player/embed/4123785/4123786" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
The Science of Changing Leaves

The Science of Changing Leaves

The Science of Changing Leaves

  • Download
  • <iframe src="https://www.npr.org/player/embed/4123785/4123786" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">

For much of America, this weekend marks the final spectacle of autumn leaves. NPR's Scott Simon talks with color scout Ed Hepborn in Lisle, Ill., about what causes leaves to change colors and what is significant about this fall.