David Cloutier is on the theology faculty at Mount St. Mary’s University in Emmitsburg, Md., where he teaches courses on moral theology, Catholic social ethics, and marriage and sexual ethics. He is the author of Walking God’s Earth: The Environment and Catholic Faith and Love, Reason and God’s Story: An Introduction to Catholic Sexual Ethics.

Lonnie Ellis is associate director at Catholic Climate Covenant, a Washington-based nonprofit devoted to mobilizing Catholics to fight climate change. He worked previously for the Franciscan Action Network and is a lay Franciscan.

Dan DiLeo is project manager for Catholic Climate Covenant. He helped coordinate the publication of “Environmental Justice and Climate Change: Assessing Pope Benedict XVI’s Ecological Vision for the Catholic Church in the United States” and is a doctoral student in theological ethics at Boston College. Contact via Catholic Climate Covenant’s Washington office.

Global Catholic Climate Movement is an international organization that helps coordinate the work of more than 650 smaller Catholic groups and congregations concerned about the environment and climate change. They describe Laudato Si’, Pope Francis’ encyclical on the environment, as their founding document.

Christiana Peppard is an assistant professor of theology, science and ethics at Fordham University in New York City. Her focus is on clean water and ideas of nature and man. She is the author of Just Water: Theology, Ethics and the Global Water Crisis and teaches classes on human nature and Darwin, theology and science, American religiosity, […]

Bill Patenaude is a special lecturer of theology at Providence College in Rhode Island. He is the chief author of Catholic Ecology, where he has speculated about what Pope Francis’ encyclical might contain. Contact via Chrissy Centazzo.

Michael Peppard is an assistant professor at Fordham University in New York City.

Riccardo Cascioli is the author of Lies of the Environmentalists and has criticized Pope Francis’ involvement in climate change, which Cascioli sees as a wedge into changing Catholic doctrine about the sanctity of life. He is also the editor of La nuova Bussola Quotidiana, an Italian Catholic news and opinion site.

Marc Morano is executive director of ClimateDepot.com and communications director at Committee for a Constructive Tomorrow, a conservative think tank in Washington that is skeptical of man-made climate change. He has been critical of Pope Francis’ involvement in climate change issues and his reliance on United Nations climate change data.