The National Project for Excellence in Environmental Education, initiated by NAAEE in 1994, has developed a series of guidelines that set the standards for high-quality environmental education.

Shorter days and cooler nights start a precise clockwork of physical and chemical interactions within leaf cells bringing forests ablaze with color as they prepare for winter dormancy. In response to certain environmental stimuli, leaf pigments begin to reveal themselves in the leaves of Georgia’s deciduous trees. The amount of pigments in trees depends on the tree species, soil composition, and other environmental components.