Samuel D. Brownback is the U.S. ambassador-at-large for international religious freedom. He previously served as governor of Kansas, as well as a U.S. representative and senator. 

John D. Loike is a research scientist in the department of biomedical engineering at Columbia University, focusing on bioethics, stem cells, cloning and the interplay between science and religion. In 2018, he co-authored a study on how to apply Jewish teachings to medical advancements like gene editing.

The Rev. William J. Barber II is pastor of Greenleaf Christian Church in Goldsboro, N.C., and president of Repairers of the Breach, a national ministry for civil rights and social justice. In 2013, Barber began a campaign on behalf of the poor that instigated “Moral Mondays” — acts of civil disobedience and mindfulness designed to […]

Brad Roth is pastor at West Zion Mennonite Church in Moundridge, Kansas. He is the author of God’s Country: Faith, Hope and the Future of the Rural Church (2017), which is excerpted here.

The Rev. David J. Collins is a Catholic priest, a Jesuit and an associate professor of history at Georgetown University in Washington, D.C., with an interest in science, religion and space. He sometimes teaches a course on outer space, science and religion.