Here is a stunning visual introduction to the artistic and spiritual heart of Tibetan Buddhism. According to the monks who create it, the Kalachakra Sand Mandala, also known as the Wheel of Time, imparts peace and healing to all beings and to the planet. Remarkable not only for its profound beauty but also for the intricate process of its construction--a delicate sifting of colored sands into elaborate patterns and symbols rich in meaning--the mandala...