Ancient alerce trees may shelter entire underground ecosystems, with vast fungal networks helping forests cycle nutrients and store carbon.

NEW YORK -- It's a tough time to be a tree. For this Earth Day, National Geographic has focused its lens on humanity's relationship with the world's 3 trillion trees and 10 billion acres of forest, ...

FRESNO, Calif. (AP) — A lightning-sparked wildfire in California’s Sierra National Forest burned Tuesday through a grove of giant sequoias and set some of the ancient towering trees on fire. Kennedy ...

During photosynthesis, trees convert the carbon dioxide to sugars and in doing so produce oxygen as a biproduct, which is vital for life on Earth. “Trees draw carbon dioxide out of the atmosphere and ...

Prototaxites taiti’ was not a fungus but an extinct eukaryotic lineage, a study reveals, resolving a mystery that as perplexed experts for centuries.