The trees exchange carbon dioxide and oxygen with the atmosphere through little “mouths” in their leaves and tiny “windows” ...

Knowing the names and stories of trees can add a whole new layer to your hikes. Here are eight that you might spot on ...

Emerald ash borer, or Agrilus planipennis, is an invasive insect native to Asia that arrived in Minnesota around 1990. As of ...

This process cleanses the tree of pollution that has been stored in the outer bark. The plane tree is monoecious ... a key characteristic that occurs only in this species and helps with identification ...