Pulling no punches, Pope Francis says that for humans to ‘trample aggressively’ on the Earth, contaminating and destroying its biological diversity, is a sin. He urges us to champion social, climate and intergenerational justice in our world. This is even more relevant today on the fifth anniversary of his encyclical, Laudato Si’: On Care for our Common Home, than when he wrote it in 2015. Dermot A. Lane writes about our duty to respect the resources of the planet and offers some suggestions as to how we can all contribute. Bishop Denis Nulty, in conversation with our RE:LINK section talks about missing the presence of others in recent months; the World Day of Migrants and Refugees occurs on 27 September and Alan Hilliard reflects on the situation of internally displaced persons (IDPs) in Ireland and around the world. And Brian Grogan SJ writes that nothing in our ‘Blue Planet’ is more precious than water and how we must value and protect it and promote its sharing.