New research has found that the punishing summer temperatures and persistent drought conditions in much of Arizona and the Southwest are dealing a double whammy to trees attempting to regulate their ...

At the edge of China's Taklamakan Desert, rows of trees are slowly edging into one of the world’s harshest landscapes after decades of planting. Scientists say this shows how human action can ...

They say every picture tells a thousand stories. And this is a story that went viral a few weeks ago when Basin and Range Watch, a desert environmental advocacy group, tweeted out an image of a map ...

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, ...

Petrified Forest National Park is the only national park in the U.S. with a section of old Route 66. The park is also home to a "rainbow" forest, which has colorful tree fossils that are more than 200 ...

Study area and field photos. (A) Map of the study area showing the land use types and distribution of the ground survey transects (indicated by red lines). (B to D) Photographs of sampling sites ...

Where there’s a tree, there’s usually a forest. But not always. A biologist describes some of the loneliest trees on planet Earth. When we think about isolation in nature, we usually picture islands ...

Add Yahoo as a preferred source to see more of our stories on Google. The Aleppo pine, for instance, is a fast-growing species found throughout the western Mediterranean, Greece and parts of the ...

Here's everything you need to know to plan a trip to Arizona's Petrified Forest National Park. A scenic audio tour by car is one of the best ways to explore Petrified Forest National Park, the only ...