* ''[http://www.math.columbia.edu/~woit/blog/ Not Even Wrong]''—A blog critical of string theory
* [https://whystringtheory.com/ Why String Theory]—An introduction to string theory.
* [https://www.quantumfieldtheory.info/String_Topics_Summaries.pdf Pedagogic Aids to String Theory]—Introductory level overview of string theory plus aids to help understanding some of the more difficult concepts. For those who have studied quantum field theory, from the author of ''Student Friendly Quantum Field Theory''.
; Video
* [https://www.bbc.co.uk/science/horizon/2001/paralleluni.shtml bbc-horizon: parallel-uni]—2002 feature documentary by ''[[Horizon (British TV series)|BBC Horizon]]'', episode "[[Parallel Universes (film)|Parallel Universes]]", focuses on history and emergence of M-theory, and scientists involved.
* [https://www.pbs.org/wgbh/nova/physics/elegant-universe.html pbs.org-nova: elegant-uni]—2003 [[Emmy Award]]–winning, three-hour miniseries by ''[[Nova (American TV program)|Nova]]'' with [[Brian Greene]], adapted from his ''[[The Elegant Universe]]'' (original [[PBS]] broadcast dates: October 28, 8–10 p.m. and November 4, 8–9 p.m., 2003).
