Why do leaves change color in fall?
Leaf's Hidden Rainbow
Why do leaves change color in fall?
All summer long, leaves are green factories, turning sunlight into sugar. But when the days get shorter and the air gets cold, the factory shuts down — and that's when the magic show begins.
The green you see all summer? That's chlorophyll, the molecule that catches sunlight and turns it into food. Chlorophyll is so bright and abundant that it drowns out every other color in the leaf — like a spotlight so strong you can't see anything else on stage.
