Individual deciduous trees mark the turning of the seasons with pale buds in the spring, densely packed green leaves in summer, vibrant red, orange, or yellow tones in fall, and bare branches in the cold of winter. Forests also mark the changes, but on a grander scale. In this series of images from the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite, forests mark the time along the southern ridges of the Appalachian Mountains, where the states of North Carolina, Tennessee, Georgia, and South Carolina all come together. Read more