His all Holiness Ecumenical Patriarch Bartholomew, spiritual leader of the world's 300 million Orthodox Christians, is the 270th successor of St. Andrew the Apostle, who founded the 2,000-year-old Church of Constantinople. For his efforts to raise environmental awareness, he was named by Time magazine as one of the world's most influential people.

The Rev. Dr. John Chryssavgis is Archdeacon of the Ecumenical Throne and a clergyman of the Greek Orthodox Archdiocese of America, where he serves as theological advisor in the office of Inter Orthodox and ecumenical relations. He is also theological advisor to the Ecumenical Patriarch on environmental affairs. He studied in Athens and Oxford, as well as taught in Sydney and Boston. The author of numerous books and articles on Orthodox theology, spirituality, and ecology, he has edited three volumes containing the selected writings of Ecumenical Patriarch Bartholomew (Fordham University Press, 2010–12) and co-edited the signature anthology on Orthodoxy and the environment, Toward an Ecology of Transfiguration: Orthodox Christian Perspectives on Environment, Nature, and Creation (Fordham). He lives in Harpswell, Maine.