See Beliefnet’s gallery of “Doubters Who Changed the World.”

The University of Cambridge launched a project called Investigating Atheism in response to the spate of books in recent years by New Atheists. The site aims to encourage informed opinion by providing historical context for the “God Wars” it says followed those books’ publication. An extensive resource, the project offers explanations, data and links on everything from […]

The Freethought Trail website traces west-central New York state’s pivotal role in the history of freethought. It is a project of the Council for Secular Humanism.

A Beliefnet excerpt from Susan Jacoby’s book Freethinkers: A History of American Secularism focuses on the so-called Golden Age of Freethought, a period during the late 19th and early 20th centuries when freethinkers’ ideas became more broadly disseminated in the U.S., thanks particularly to popular orators such as Robert Ingersoll.

Jonathan Miller explored the history of disbelief in a BBC series in 2005.

A chapter on the Atheist movement’s history is included in Gordon Stein’s 1980 book An Anthology of Atheism and Rationalism.

The Pluralism Project at Harvard University has a webpage explaining atheism and other secular ideologies.

Written by Robert Todd Carroll. Carroll explains topics in the supernatural, paranormal, and pseudo-scientific realms.

Written by Bill Cooke. Cooke provides a reference for key concepts, terms, and developments in the atheist, secularist, and humanist movements.