Young aspens often don't survive because of factors such as grazing elk, according to a study by Northern Arizona University ...

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 most ...

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 ...

Aspen is highly valued by beavers, who returned to the Cairngorms last year, 400 years after they were driven to extinction in Scotland. It is also an important defence against climate change, as it ...

A remarkable aspen forest that sprouted from a single seedling makes "the Roman Empire seem like a recent phenomenon." ...

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 ...

FLAGSTAFF — Beneath the scenic yellow and red leaves of soaring aspen trees in the Kachina Wilderness, forest ecologist Mike Stoddard is looking down. His concern isn’t the brilliant fall ...