Careful examination of an aspen trunk reveals that it is slightly green in colour, and this indicates the presence of chlorophyll there. This enables the tree to absorb a small amount of the sun ...

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

The ability of aspen to produce whole stands of "trees" vegetatively provides yet ... and mudslide tracks populated by young, light-green aspen clones re-colonizing those spaces with shoot ...