A nature book, sometimes referred to as a natural history book, is a literary work that describes and documents various aspects of the natural world. Synonyms for the term nature book include environmental literature, ecological writing, wildlife writing, and nature writing. These books can focus on a range of topics, including flora and fauna, the environment, conservation, and climate change. They often involve personal reflection, scientific research, and poetic description. Some classic examples of nature books include Henry David Thoreau's Walden, Rachel Carson's Silent Spring, and John Muir's My First Summer in the Sierra. Regardless of the term used, nature books provide important insights into our relationship with the world around us.