US Department of Agriculture
The Science of Color in Autumn Leaves
Coupled with a beautiful photo gallery, the National Arboretum sets out to explain the science behind why leaves of deciduous trees change their color in the autumn months. While temperature effects the colors, learn here what happens in...
Other
Suny E Sf: The Splendor of Autumn
This brief site describes the changes that take place within leaves and the environment which result in the colors we observe in Autumn.
Environmental Education for Kids
Eek!: Why Do Leaves Change Color?
Simple, but thorough explanation of fall colors in deciduous forests. Where the color comes from and how trees lose their leaves.
Environmental Education for Kids
Eek!: Seasonal Observations: Fall
Fall begins with the autumnal equinox, usually around September 22 or 23. The equinox is the time of the year when we have equal length of night and day.
Environmental Education for Kids
Eek!: Be the Change: Yard Care
Follow the suggestions here for a fall leaf cleanup in your yard.
Environmental Education for Kids
Eek!: Seasonal Observations
Have you ever wondered what is going on under the snow? Why leaves change colors? How migratory birds find their way? Find the answers and check out these ideas on how to explore, discuss, or celebrate based on our four seasons!