Simon Singh is a British author and journalist known for his work in popular science and mathematics. He gained fame with his books, such as Fermat's Enigma, which explores the history of a famous mathematical problem. Singh has also written about topics like cryptography and the history of mathematics, making complex subjects accessible to a general audience. In addition to his writing, Singh has been involved in various media projects, including television documentaries. He is a strong advocate for science communication and has spoken out against pseudoscience, promoting critical thinking and the importance of evidence-based reasoning in society.