Wind-sculpted sand—that is how I think of dunes. In our main feature, “The Dune Whispers,” Ralph D. Lorenz describes the formation, and varieties, of these fascinating and beautiful works of planetary art.
Every year, I write a feature article for the year's final issue of The Planetary Report titled "The Year in Pictures." Because The Planetary Report is a printed product, I have to compose the article before the year has ended. So here is an addendum to the printed article, a few images that came in November and December that mark significant events of 2013.