Put away your sifting pans and pick axes because there's a tree that grows the next best thing to money. Don't expect to ...

Female (left) and male spruce cones at the Arnold Arboretum. It's a more common sight to see separate male and female cones like this. (Courtesy William "Ned" Friedman) Every spring the conifer trees ...

Know all of the different options before you head out to the tree farm. In the meantime, you may want to learn about the different types of trees that are available—varieties like Douglas fir, blue ...

Minuscule particles of gold in the needles of Norway spruce trees that are produced by bacteria living inside the plant ...

Bacteria inside Norway spruce needles convert dissolved gold from mineral-rich soils into solid nanoparticles, revealing a ...