Read a June 4, 2003, article on the Fox News website on the controversy over a Muslim youth camp in Iowa.

John Voll is professor of Islamic history and associate director of the Prince Alwaleed bin Talal Center for Muslim-Christian Understanding at Georgetown University in Washington, D.C. He is an expert in Middle Eastern, Islamic and world history, and he has written on Islam in the modern world and Islam and democracy.

Read a Beliefnet.com interview with Ursula Goodenough, a poet, biology professor and “religious naturalist” who has written a book called The Sacred Depths of Nature (Oxford University Press, 2000).

Read the transcript of a March 9, 2001, Religion & Ethics Newsweekly program on Celtic spirituality, which discusses the Celts’ sense of nature as “the theatre of divine presence.”

Read a Beliefnet.com article by Kimberly Winston about the rapid growth of Wicca and other Earth-based religions.

The Witches’ Voice lists outdoor rituals and festivals around the country, including a state-by-state section.

Selena Fox is a high priestess and senior minister of Circle Sanctuary, a Wiccan church and pagan resource center near Mount Horeb, Wisconsin. Wicca is a neopagan faith that relies heavily on nature and a belief in some forms of magic and the supernatural.

The Lilly Foundation’s National Clergy Renewal Program provides funding for pastors to “take an extended break for renewal and refreshment.” Contact program director Robert C. Sale.

The Rev. Lizette Larson-Miller, a professor at Church Divinity School of the Pacific in Berkeley, Calif., wrote an article in the May 23, 2005, edition of America magazine (subscriber-only) titled “Holy Ground: Roadside Shrines and Sacred Space.” She identified five general characteristics of roadside shrines, and she ponders what liturgical churches might learn from this widespread trend.