Trees in nature follow a “self-similar” branching pattern called a fractal, in which the same structures repeat at smaller and smaller scales from the trunk to the branch tip. In the new study ...

Do you have a tree with a dead, damaged, badly placed or rotting branch that needs to be pruned off? To avoid danger to yourself and damage to the tree, plan carefully before you cut.

Like the branches, twigs and leaves of a tree, fractals repeat the same patterns across different scales. Snowflakes, lightning bolts and human blood vessels are also fractal structures ...