An online encyclopedia about religion with a cross-cultural approach. Originally published in 2005 in 15 volumes.

Addresses all aspects of the dialogue between the sciences and the world's religion. Addresses humanities as well as physical sciences and technology. Controversial issues such as human cloning and stem cell research are examined along with more traditional questions such as the origins of life, the nature of sin, and the philosophy of science and religion.

Provides 3,000 articles on all aspects of Europe and Christendom from the fifth to the fifteenth century, explores art, architecture, religion, law, science, language, philosophy, and theology, as well as cultural, religious, intellectual, social and political history. Also covers the rise of Islam and people of other cultures with whom Europeans came into contact.