From the Americas to Asia, from Oceania to Europe, Columbans around the world celebrate the 5th anniversary and the Laudato Si’ message, especially in its call for integral ecology which is a holistic approach to care for our common home that draws on faith, science, education, advocacy, and lifestyle transformation. Columban eco-theologian Sean McDonagh and author of The Death of Life (2005) on biodiversity describes this encyclical as, “the single most important piece of Catholic Social Teaching each of the last 100 years and essential to every Catholic’s formation for the next 100 years.”