Green is a fascinating symbol. In ancient Egypt, it represented the cycle of life. Among the Indian Mughal rulers, the emerald was a sign of power. In the Middle Ages, clothing in green indicated the social status of merchants. Today, green plays a significant role in politics and sustainability. This book tells the story of chlorophyll as the substance of life, of green celestial phenomena, and of green cones in the human eye. All these curious discoveries come together to form a vibrant kaleidoscope of green shades, presented as a book for all the senses through its extraordinary design.