Very small populations of the species were rediscovered in Brazil’s Atlantic Forest in Rio de Janeiro, researchers said.

Across 24 peaks and 240 miles through the Sierra Nevada, a UC Davis team searches for high-altitude Jeffrey pines to learn ...

Every mind-bending molecule in nature has an evolutionary origin; a defense against being eaten, a lure for pollinators, or perhaps a happy biochemical accident. Though they seem extraordinary, life ...

Identifying trees in winter doesn’t stop at bark and buds. In this second part, we explore additional features and techniques ...

As the fall winds blow the remaining leaves from deciduous trees and the plants have gone dormant for the season, the bones ...

Choosing a real Christmas tree is a big decision! This complete guide breaks down the different types of Christmas trees and ...

Two lookalike trees may share your yard but only one's a menace. Learn how to spot the differences between an invasive species and a valuable native tree.

Nothing looks prettier than a snow-covered tree in winter. Beneath the surface, however, that same tree could be suffering ...