In praise of trees.
Trees are also hosts for every other form of life. Their roots chew up the very crust, a process aided by microbes, and in doing so, trees remake continents. Their bark harbors fungus and lichen. Their branches and leaves shelter and feed insects, birds and mammals. Even now, when humans are capable of building machines that fly to Mars, we still use trees for shelter. We also cut them down and burn them for warmth. Some of us cut them down and bring them inside and festoon them, for a form of psychic warmth that lasts a few weeks and is the only reason I can tolerate December.