After reciting the Angelus prayer Aug. 31, Pope Leo called on Catholics to join him in marking the Sept. 1 World Day of Prayer for the Care of Creation. He told people gathered for the Angelus prayer that Pope Francis had established the day of prayer for Catholics, accepting an invitation Orthodox Ecumenical Patriarch Bartholomew of Constantinople had made to all Christians. In the video released by the Pope’s Worldwide Prayer Network, Pope Leo recites his own prayer linking the 800th of the Canticle of Creation and the 10th anniversary of Pope Francis’ encyclical “Laudato Si’, on Care for Our Common Home,” the network said. Pope Leo prays in the video:“Lord, you love everything you have created,and nothing exists outside the mystery of your tenderness. Like St. Francis of Assisi, today we too want to say:‘Praised be you, my Lord!