Pope Benedict in his message for the World Day of Peace in 2010 chose the theme If You Want to Cultivate Peace, Protect Creation. In this message he says “‘creation is the beginning and the foundation of all God’s works’, and its preservation has now become essential for the pacific coexistence of mankind. Man’s inhumanity to man has given rise to numerous threats to peace and to authentic and integral human development – wars, international and regional conflicts, acts of terrorism, and violations of human rights. Yet no less troubling are the threats arising from the neglect – if not downright misuse – of the earth and the natural goods that God has given us.” Should we as Catholics worry about ecology? Did not God give us the earth to take care of and use it with responsibility? To speak about the relation between the Church and ecology Deacon Pedro invites Sr. Damien-Marie Savino FSE, Chair of the Department of Environmental Science and Studies of the University of St. Thomas.