We have a problem with our aspen trees. Nearly all of them are sapping quite a bit and are also splitting down the sides. We live at 6,100 feet in Paonia. Last summer the leaves were mottled. Any ...

Richard L. Lindroth received funding from the Wisconsin Alumni Research Foundation, project 135G909 and from the U.S. Department of Agriculture McIntire-Stennis Program, grant WIS03003. Patricia C.

After decades of decline, the aspen forests of northern Yellowstone are finally making a comeback, and believe it or not, it’s all thanks to the return of certain carnivores. A new long-term study has ...