Written by Robin Le Poidevin. Le Poidevin explains agnosticism as an ideology and writes about its history and development.

Written by S.T. Joshi. Joshi writes about the history and development of modern Atheism.

The New York Times has gathered basic information and an archive of its stories regarding atheism on a “Times Topics” page.

Freethoughtpedia is an online repository of information and commentary about the freethought movement. As with any open-source site, reporters should confirm anything found there before using it in stories.

Beliefnet’s page on secular philosophies includes a number of forums and features for nonbelievers.

BBC’s atheism page gives an overview of the movement and information on its history, rites and rituals.

The Association of Religion Data Archives posts data (from the 2005 World Christian Database) about atheism worldwide, broken down by region and country.

An online “celebrity atheist” site lists hundreds of well-known actors, athletes and business leaders who it says are atheists, agnostics or skeptics.

The University of Cambridge posts a “Who’s Who” of atheists in history on its Investigating Atheism website.