Earth and Mars relates the life story of two planets, celestial siblings in space. The book is a fusion of art and science, a blend of images and essays celebrating the successful creation of our life-sustaining planet. A collection of simple and profoundly beautiful forms, Earth and Mars provides a context to appreciate the common forces responsible for these haunting shapes as well as the divergent paths that led to an Earth teeming with life-forms, while its sibling, Mars, is seemingly devoid of all life.