These friends spend a lot of time outdoors. They especially enjoy the crisp air and vibrant colors of autumn. For their school science project, they decided to explore the many different leaf colors they notice in the fall and find out what makes these leaves change from green to brilliant orange, yellow and red. Their question: How does sunlight affect the leaf color of oaks and maples?
© 2014 PBS & WGBH Educational Foundation. All rights reserved.