July 25 marks the 40th anniversary of Pope Paul VI's encyclical on married love and procreation, "Humanae Vitae" (On Human Life) which reaffirmed the church's teaching on the regulation of births.

Pope Francis celebrates the First Vespers and Te Deum for the end of the year, in St. Peter's Basilica, Vatican City, 31 December 2024. (Photo by EPA/MASSIMO PERCOSSI /MaxPPP) Seated in a chair at ...