The seasons are changing from fall to winter, and one of the major changes to the environment is that the deciduous trees have lost their leaves. Evergreen trees may still have green needles, but all ...

A bolt of lightning struck a tree on a property in north-central Wisconsin on Tuesday, September 9, sending bits of bark and other debris flying through the air and setting the tree on fire. Security ...

Clockwise from top left: (1) Two lodgepole pines growing side-by-side with notably different bark textures, (2) a rough-barked limber pine that has been attacked by bark beetles, (3) a limber pine ...