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 ...

In early spring, an aspen clone will produce small, inconspicuous strings of reproductive ... The ability of aspen to produce whole stands of "trees" vegetatively provides yet another key element ...

Inspired by the dark “eyes” of the aspen tree — scars left behind on the trunks after the trees drop lower limbs that aren’t getting enough sunlight — the distinctive window designs in ...