Brian Green is the director of technology ethics at the Markkula Center for Applied Ethics at Santa Clara University. He studies how emerging technologies, including artificial intelligence, affect human life.

Ilia Delio is a theologian and writer who is interested in the intersection of faith and science. She is a Franciscan sister.

Cardinal John Olorunfemi Onaiyekan is the Metropolitan Archbishop of Abuja, Nigeria. He took part in a 2018 conference on religion and the environment hosted by Orthodox Ecumenical Patriarch Bartholomew I of Constantinople.

Tomás Insua is the co-founder and executive director of the Global Catholic Climate Movement. Insua grew up in Argentina and now lives in Rome. He can be contacted through Reba Elliott, the organization’s communications director.

The Rev. Robert “Bud” Grant is an environmental theology professor and Catholic priest at St. Ambrose University in Davenport, Iowa.

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. 

Hille Haker is the chair of Catholic moral theology at Loyola University Chicago, where she studies human rights, bioethics and feminist ethics. Haker serves as editor of the Values in Bioethics book series and is a member of the European Group on Ethics in Sciences and New Technologies of the European Commission.

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.