Father John is a cultural historian and a historian of religions.
He has focused his recent research on ecology and religion. He has participated in the United Nations Framework Convention on Climate Change (UNFCCC) from the 1997 Kyoto COP 3 to 2014 Lima COP 20. He has been nominated for NGO participation for 2015 Paris COP 21. His UN FCCC articles are published in their first instance by the Oriens Institute, Tokyo and by the Office of Global Concerns, Washington D.C. He is an editor of the UNEP volume: Earth and Faith. His work also centres on the inter-religious environmental dialogue