Nature is more complex than most people  observe. To understand this truism, all a person needs to do is study trees.  Why do the branches grow in the directions they do? Is it just searching for sun? Why do some tree branches bark twist? Why do some trees rot in the center and still stand tall? Why are trees so beautiful with and without their leaves?  Why are some roots above grown and others above ground? Why do some trees shed their bark each year? Here are some interesting trees to think about.