Pope Francis published his latest encyclical on Wednesday 4 October (the Feast Day of St Francis of Assisi) with the title Laudate Deum focusing on the environment. ‘Laudate Deum’ (Praise God) is a frequent refrain in several psalms, including Psalm 148, which tells the heavens and angels, the sun and moon to praise the Lord. The new document is what the Pope has described as a follow-up to his 2015 encyclical Laudato Si (On Care for Our Common Home). The new document, he said, is ‘a look at what has happened’ since 2015 and a look at what still ‘needs to be done.’