Vicenc Molina Oliver is a professor at the University of Barcelona, where he studies civil rights, ethics and secularism. He has researched the rise of religious “nones” in Spain.

Andrew Singleton is a sociologist of religion at Deakin University in Australia. He studies spirituality, New Religious Movements and young people’s relationship with faith.

Galen Watts is a Ph.D. candidate in cultural studies at Queen’s University in Kingston, Ontario. He is studying contemporary spirituality and has focused his research on Canadian millennials.

Manny Tejeda-Morena is editor and publisher of The Wild Hunt, an online news site focused on paganism, the occult and New Age beliefs.

Olga Marina Segura is an associate editor at America magazine, where she writes on race, culture and the Catholic Church. She co-hosts “Jesuitical,” a podcast on issues facing Catholic young adults.

Kara E. Powell is executive director of the Fuller Youth Institute at Fuller Theological Seminary, where she also serves as an associate professor of youth and family ministry.

Kaya Oakes is the author of The Nones Are Alright and Radical Reinvention: An Unlikely Return to the Catholic Church and regularly publishes articles and essays on religion, such as pieces on aging in congregational life. She is also a writing instructor at the University of California, Berkeley.

Heron Michelle is a witch and priestess who leads a training program on modern witchcraft in Greenville, North Carolina. She has written about the millennial generation’s relationship with witchcraft.

Sister Barbara Hansen is a Dominican nun in Grand Rapids, Michigan. She serves as a sister collaborator for the Nuns and Nones project, which brings together Catholic sisters and religiously unaffiliated millennials.