Joanne O'Brien and Martin Palmer are members of the International Consultancy on Religion, Education and Culture (ICOREC), a UK-based group that specializes in working with religions worldwide. Martin is a regular TV and radio broadcaster for the BBC, and heads the Alliance of Religions and Conservation (ARC), which develops environmental projects with religions worldwide. Joanne has headed work with Buddhists in Asia and the Benedictine Order of the Catholic Church for ARC. She also runs Circa Religion Photo Library, one of the largest such libraries devoted to religious topics. They are both authors of many books on religion, including Religions of the World and Festivals of the World.