The Science Behind Colorful Fall Leaves

Terry Krautwurst explains the biology behind the majesty of the colorful fall leaves that we all enjoy, including the green machine, chlorophyl and photosynthesis.

The stop and go of chlorophyll gives this maple leaf its red-light/green-light nature.
The stop and go of chlorophyll gives this maple leaf its red-light/green-light nature.
DAVID CAVAGNARO