Pando consists of 40,000, or so, trees that are genetically identical.VW Pics / Contributor / Getty Images Pando is the largest organism on Earth, consisting of about 40,000 genetically identical ...

Foresters and researchers are using sound to look inside living trees. A new study presents methods for use of sonic tomography, which measures wood decay by sending sound waves through tree trunks.

Get your news from a source that’s not owned and controlled by oligarchs. Sign up for the free Mother Jones Daily. On a hillside in Utah’s Fishlake National Forest is a tree, and if you listen very ...

In autumn colorful trees take center stage outdoors. Their changing leaves make me pause to admire their beauty. These sentinels signal the change of seasons. Raking their falling leaves give us ...

The artist Scott Kildall is waving his hand over the contours of a Joshua tree, just inches from its spiky green, bayonet-like leaves. "If I get too close to it, it will prick me and draw blood," he ...