Every autumn we revel in the beauty of the fall colors. The mixture of red, purple, orange and yellow is the result of chemical processes that take place in the tree as the seasons change from summer ...

Camouflage is a common defensive strategy among animals. By modifying their coloration and patterning, animals evade ...

This incredible display is primarily due to the presence and breakdown of various pigments within the leaves. Chlorophyll, the pigment responsible for the green color, starts to fade as daylight ...