Aspen has distinctive, almost-circular leaves with flattened petioles or stems. This flattening causes the leaves to tremble or flutter in the slightest breeze, thereby giving the tree one of its ...

In the face of flames, nothing is guaranteed. But in the event of a local fire, both Mother Nature and the Aspen Fire ...

In a surprising discovery within Kids Camp at Kaniksu Land Trust’s Pine Street Woods, students from Washington Elementary ...

Angel Watkins and co-workers in Colorado blame many culprits in the decline of the Aspen. JT Thomas It's a relentlessly sunny day in the Rocky Mountains, and here at 9,000 feet, on the Grand Mesa ...

The sight of innumerable topaz leaves trembling in the declining autumn sun is one reason the tourist season that used to run in the summer and then the winter is now bleeding into fall. But another ...

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 ...

The set of five stamps features individual leaves from the aspen, sassafras, oak, maple, and sweetgum trees, capturing the season’s natural splendor in a collectible format. Designed by USPS art ...