And some people believe that you can feel this energy if you choose a tree that you feel attracted to, put your arms around it and stay there holding it for a while.This 'tree-hugging' is believed to be good for stress, make you sleep better and help you to feel more positive and calm. The Irish politician Gerry Adams once told a journalist that he regularly hugged trees.
And they don't only share with trees of the same species – any type of tree can benefit.
A community of trees makes itself stronger by working together.
We know that it was living 160 million years ago when dinosaurs ruled the earth. But gingko fossils disappeared about seven million years ago.
Scientists thought that it was extinct until it was discovered in Japan in 1691.
So, strong trees in a good position will share food and water with weaker trees that receive less sunlight.
They do this through their roots, through the soil and also through the networks of tiny fungi that grow in the soil between them.
Trees may have a lot to teach us about being part of a community and how co-operation is better for a society than competition.
Scientists are only just beginning to understand how it all works, but we now know that a community of trees growing together share all of the available resources with each other.
They provide habitats for numerous species of fauna and flora, firewood for cooking and heat, materials for buildings and places of spiritual, cultural and recreational importance.
Trees are so important for the global environment and the health of the species that live there, and they need our unconditional care and protection.