Why do leaves change color only in the fall?

In fall we like to change up our wardrobe from shorts and T-shirts to pants and sweaters. And guess what, trees do that too! Except they change the color of their leaves. Why is that? We asked Marlyse Duguid from the Yale School of the Environment to help us find the answer. Got a question that’s leaf-ing you stumped ? Send it to us at BrainsOn.org/contact , and we’ll put your mind at (for)rest . See omnystudio.com/listener for privacy information.