Leaves are often synonymous with autumn. Deciduous trees put on a show for those of us in a temperate climate. They change colors as their chlorophyll breaks down and the green gives way to yellows, oranges, reds, and browns. When they fall to the ground, we pile them up and play in them. But leaves are more than just colorful and crunchy. They are the food factories for trees (and other plants). Their green color absorbs sunlight to power photosynthesis, the food-making process. The leaves take in carbon dioxide from the air and along with water, they make carbohydrates to feed the tree. Along the way, oxygen is produced, and they “breathe” it out of their leaves into the environment around them. Lucky us!