Pando is an ancient quaking aspen tree (Populus tremuloides) with 47,000 genetically identical stems, or tree trunks, connected to a vast underground root system. Each stem is a clone of the one ...

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

Populus tremuloides, the quaking aspen of the North American continent, stands as one of the most easily recognized, most beautiful and most admired of all tree species. In order to help ...