Foresters are calling it the most destructive tree pest to ever invade North America, and its march of devastation continues. Emerald ash borer has now spread to 35 states, killing hundreds of ...

Looking at big, mature trees, you may not think that their trunks sway much in the wind. They do to a certain extent, however … enough so that electronic measurement of the swaying motion can be used ...

Trees in fall are in a state of serious change and reorganization. The tree is becoming dormant. A tree heading toward winter will sense the changing temperature and light and obey the dormancy ...

SALT LAKE CITY — Winter officially begins Sunday, but don't tell that to some of Utah's plants and trees. Some trees and ...

The Amazon rainforest, one of the largest remaining tropical rainforests on our planet, faces several threats that are slowly damaging its rich biodiversity. Illegal logging, rapidly increasing global ...