Metropolitan John of Pergamon, representing the Ecumenical Patriarchate. Formerly Professor of Theology at Glasgow University and Kings College, London, he is a key figure in major ecumenical dialogues between the Orthodox Church and the other main Christian traditions. He is a leading theologian in the area of ‘Orthodoxy and Ecology’ and he has played a central role in making the Orthodox Church one of the most active religious communities involved with development and environmental issues.