Autumn leaves: Why they fall, what you can do with them

Trees are finally changing color as the temperatures fall and the leaves slowly drop. Leaves change color because of the destruction of chlorophyll. Chlorophyll is the pigment responsible for photosynthesis, but because deciduous trees enter dormancy in the winter, they don’t need to go through photosynthesis, and destroy chlorophyll to reap any remaining nutrients from it in a process called...