Lichens survive in a very wide range of habitats worldwide. Amazingly, more than 400 species can be found in Maryland.

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 ...

When we think of bark on a tree, we tend to compare it to the skin of a human. The primary function of both bark and skin is to protect the material within and beneath it. In Grade 7, we learned that ...

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 ...