Non-fiction refers to literature that is based on factual information and real events. This can include works such as biographies, memoirs, essays, journalism, scientific and historical writing, and more. Non-fiction books aim to inform and educate readers about real-life topics and events, rather than providing a fictional narrative. Non-fiction authors typically conduct research and gather information through interviews, observations, and other sources to provide accurate and objective accounts of the subject matter. Non-fiction literature can be found in a variety of genres and styles, and can cover a wide range of topics from politics and current events to science and technology, history, religion, and more.