Nature, they say, abhors a vacuum—which may be why we fill the space between us with communications of all kinds. During busy times, we email, post, text, and tweet and are surprised when we look up and see a flesh-and-blood face. Poetry posts are a way to combine human connection and a connection with nature. They are like those real-estate signs that hold listing sheets, except that instead of listings, they hold and display poems, quotes, or words of wisdom. They range in complexity from imitation trail markers to unprotected pages attached to trees, which turns trees into—yes—poet-trees.MATERIALS• Materials for posting, such as a length of string or a prebuilt box• Statement, wish, quote, or poem honoring nature• Tree or lamppost• Unbleached paperPREPARATIONFind a quote or a poem that honors nature and may inspire human beings. Print it out or copy it by hand and live with it for a week to make sure it speaks to you in a variety of moods. Then consider the kind of experience you want to offer.• Do you want to post a single page that people come to see, or a product people can take with the …