In the Wasatch Mountains of Utah, a remarkable organism known as Pando stands as the largest living organism on Earth by mass. This colossal stand of genetically identical quaking aspen trees ...

New tree saplings growing in the Pando forest in Utah are being eaten by deer and elk, which hinders it from growing.

By mass, it is the largest single organism on Earth. Aspen trees do tend to form clonal stands elsewhere, but what makes Pando interesting is its enormous size.

Pando — Latin for "I spread" — is the largest known tree on Earth and the heaviest living organism on record.

By mass, it is the largest single organism on Earth. But Pando now faces threats of climate change, deer, and disease.

The biggest living thing on Earth is being nibbled to death. Can it be saved? Pando, a huge aspen grove in Utah, is a single organism that’s lived for millennia. Unchecked grazing is destroying it.

A sound artist set out to capture the acoustic wonder of a famed swath of quaking aspens. It's one of the largest trees on the planet, known as Pando.

Researchers have recorded the sounds of the world's largest tree, a 13-million-pound (6 million kilograms) behemoth known as Pando that stretches across 106 acres (43 hectares) in southern Utah.

Since arising after the last Ice Age, Pando has thrived in a relatively stable climate. But climate change threatens the size and lifespan of the tree, as well as the whole ecosystem it hosts.

New tree saplings growing in the Pando forest in Utah are being eaten by deer and elk, which hinders it from growing.