They give us shade. They make our neighbourhoods green. They add beauty and peace to our lives. And then I remembered a second thing about trees. We need trees.
Trees enrich the soil and supply the world with oxygen.
The big forests of the world convert poisonous gasses into the oxygen the rest of us need to live. The next thing that I remembered was that many people still use trees and other plants for medicines. The bark and leaves of some trees are used to make things that heal us when we are ill. Many of the things we buy in the pharmacy have parts of plants and trees in them. Things like buchu and eucalyptus and camphor.