Laudato Si' embraces what Francis calls a "very solid scientific consensus" that humans are causing cataclysmic climate change endangering the planet.
Pope Francis formally approved a further list of delegates to October's world Synod of Bishops on the family.
The pope approved the Canadian bishops' election of: Archbishop Paul-Andre Durocher of Gatineau, conference president; Bishop Noel Simard of Valleyfield; Cardinal Thomas Collins of Toronto; and Archbishop Richard Smith of Edmonton.
The Canadian bishops' alternates also were approved. They are Bishop Lionel Gendron of Saint-Jean-Longueuil and Archbishop J. Michael Miller of Vancouver.
A leaked version of Laudato Si' also shows a reorientation of the church's understanding of the human person.
Pope Francis on Sunday stressed the importance of children having heterosexual parents, just a day after Rome's gay pride march demonstrated the changing attitudes about same-sex couples outside the Vatican walls.
Addressing around 25,000 followers from the diocese of Rome, the pope said the differences between men and women are fundamental and "an integral part of being human."
The pope likened a long-lasting marriage to a good wine, in which a husband and wife make the most of their gender differences.
Updated: U.S. Archbishop John Nienstedt of St. Paul-Minneapolis resigned this morning, along with his auxiliary, Auxiliary Bishop Lee Piché.
Pope Francis will open a homeless shelter on the edge of Vatican City, the latest move by the pontiff to help poor people in Rome.
The shelter is under construction on Via Penitenzieri, just a few steps away from the Vatican walls, a Holy See spokeswoman said.
Once completed, the center will be run by volunteers, who will host 30 people at a time.
Setting up a shelter is just one of a few initiatives by Pope Francis to highlight the suffering of homeless people in the Italian capital.
Russian President Vladimir Putin met with Pope Francis at the Vatican on Wednesday, in a visit being scrutinized for meaning and significance as Russia continues taking unilateral military action in Ukraine.
The Vatican press office released an unusually lengthy description of the encounter, saying the discussions between the two leaders were “dedicated principally to the conflict in Ukraine and the situation in the Middle East.”
Pope Francis has approved the outline of a new system of accountability for Catholic bishops who do not appropriately handle accusations of clergy sexual abuse.
The U.S. and the Holy See have signed a joint measure to reduce tax evasion by American individuals holding money at the Vatican bank.
Pope Francis made a concerted call for efforts at reconciliation during a visit to Sarajevo on Saturday, saying peace-making must be carried forward every day.