How has Pope Leo XIV continued to enforce the teachings of Laudato si’?

Pope Leo XIV, who succeeded Pope Francis in May 2025, approved a new mass for the care of creation, which was added to the Roman Missal, and launched a project at Castel Gandolfo, the papal summer residence, to educate visitors about integral ecology and sustainability. These actions reinforce the teachings of Francis’s Laudato si’ (2015; “Praise Be to You”), a landmark encyclical that addresses the environment and the care of the Earth as an urgent moral issue.