Graham Hancock is a British author and journalist known for his unconventional theories about ancient civilizations and historical events. He gained popularity with his book, Fingerprints of the Gods, published in 1995, where he suggests that advanced societies existed thousands of years ago and were lost to history due to cataclysmic events. Hancock often explores topics such as archaeology, ancient history, and mythology, challenging mainstream views. His work has sparked both interest and controversy, leading to debates within the academic community about the validity of his claims and the interpretation of archaeological evidence.