You may have noticed that there are tall tree-like things appearing all over the landscape these days. They are not trees although they sometimes stand among trees. They are towers that hold the electronics to transmit our various signals for telephones, cellphones, television, radio, and who knows what else. They are shiny metal and easy to identify. And one of them can grow up almost overnight in a place there never had been one before. Sometimes they grow up from the ground and also they can sprout from the tops of buildings. They are not attractive.