The glorious colors of turning aspen trees in autumn are not to be missed -- but the traffic caused by other nature lovers pouring up I-70 is a must to avoid. The solution? A horse, of course.

The ability of aspen to produce whole stands of "trees" vegetatively provides yet ... Why do quaking aspen leaves quake and tremble? The leaves of this species quake, shake and tremble in the ...

Aspen leaves typically appear heart-shaped or nearly ... The uniqueness of the sassafras tree's smell comes from its citrusy leaves and cinnamon-scented bark. In the fall, sassafras trees are ...