Gina Zurlo is a senior researcher and lecturer in world Christianity at Harvard Divinity School. She is also editor of the World Christian Database and a visiting research scholar at Boston University’s Institute on Culture, Religion and World Affairs.

Nicolas M. Somma is an associate professor of sociology at the Pontifical Catholic University of Chile. He is co-author of the book Links, Beliefs and Hopes: The Social Cohesion of Latin Americans and a 2017 article on religious change in the region.

Cristina Rocha is a professor at Western Sydney University, where she researches Pentecostal Christianity, Buddhism in the West, New Age spirituality and transnational links between Australia and Brazil, where she grew up. She is president of the Australian Association for the Study of Religion and co-editor of the Journal of Global Buddhism and Religion in […]

Gary Bouma is an emeritus professor of sociology at Monash University in Melbourne, Australia, where he studies religious diversity, pluralism, terror and the relationship between religion and public policy. He is the author or co-author of more than two dozen books, including Australian Soul: Religion and Spirituality in the Twenty-First Century, and an Anglican priest.

Grace Davie is a professor of sociology at the University of Exeter. She studies religion-related demographic trends in Europe.

Katja Rakow is an assistant professor of religious studies at Utrecht University in the Netherlands. She studies Christian megachurches in the United States and Singapore and contemporary Pentecostalism more broadly.

Davis Voas is a professor of social science at University College London, where he studies religious change.  He helps lead the European Values Survey and British Religion in Numbers project.

Scott McConnell is the executive director of LifeWay Research, which conducts surveys on issues affecting American religious life and Protestant pastors. Arrange an interview through Aaron Earls.

Jennifer McClure is an assistant professor of religion at Samford University in Birmingham, Ala. She is also the senior associate for congregational resources with the Association of Religion Data Archives and consults with congregations on organizational health.