The center of a tree or shrub stem (from roots to trunk, branches, and twigs) is woody, composed of xylem cells that conduct water from the roots to the upper parts of the tree. That woody section is ...

Tree bark surfaces play an important role in removing methane gas from the atmosphere, according to a study published 24 July in Nature. While trees have long been known to benefit the climate by ...

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 ...