Researchers found a hidden mathematical rule in tree-like art. Branch thickness follows a predictable ratio, making trees recognizable.

Orange or yellow paints are used for harvest boundaries, and trees within those areas have blue, orange, green or yellow paint, depending on whether they are to be taken or spared. A black paint m ...

Some companies claim to sell black walnut tree clones developed at Purdue University; however, Purdue University no longer holds patent rights to these trees and cannot endorse the claims made for the ...