Tourists and hikers carve images such as hearts, hate symbols and initials into aspen trees. This permanently harms the trees ...

Sweeping across 107 acres of Utah’s Fishlake National Forest is one of the world’s largest organisms: a forest of some 47,000 genetically identical quaking aspen trees, which all stem from a single ...

Each fall, about a thousand cattle pass through southern Utah’s Pando aspen grove, believed to be the world’s most massive living organism, pausing for a week or two on their way from summer to winter ...

A tree is sometimes more than just a tree. Quaking aspens, North America’s most widely distributed tree, often reproduce through cloning. What appear as individual trees are instead collections of ...