Heidi Campbell is a professor of communication at Texas A&M University. She has researched a variety of topics, including online faith communities, new media ethics and the relationship between digital culture and religion. She has studied questions related to the nature of community, identity, authority and authenticity online through ethnography, case studies, interviews and textual analysis.

Darryl Hart is distinguished visiting assistant professor of church history at Hillsdale College in Hillsdale, Mich. His books include Refurnishing the Public Square: Religion and Public Policy in America; That Old-Time Religion in Modern America: Evangelical Protestantism in the Twentieth Century; and From Billy Graham to Sarah Palin: Evangelicals and the Betrayal of American Conservatism.

Michael Schuck is co-director of the International Jesuit Ecology Project and an associate professor of theology at Loyola University in Chicago. He is an expert on the social teachings of papal encyclicals.

AIDRom is a project of the Ecumenical Association of the Churches of Romania that encourages member churches to promote environmental protection, ecological education and sustainable development. Members include the Orthodox Church, the Reformed Church, the German Lutheran Church, the Synodo-Presbyterial Church of AC and the Armenian Orthodox Church. It is based in Bucharest, Romania.

Michaela Farm is a project of the Sisters of St. Francis in Oldenburg, Ind. It promotes the respectful use of resources, sustainability, gratitude, hospitality and caring. The sisters and staff work with farm animals and grow food for a nearby food bank.