Invasive caterpillars can make aspen forests more toxic for native insects—ecologists explain how
Quaking aspen (Populus tremuloides) is the most widespread tree species in North America. As a keystone species, aspen ...
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Aspen archive: Trees tell archeological stories of shepherds
Shepherds, often of Mexican, Basque, Greek or Irish descent, have long spent summer months high in Wyoming ... many left their marks on the bark of aspen trees as they traveled through, and ...