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Pope Francis addresses mayors from around the world at a workshop on climate change and human trafficking in the synod hall at the Vatican July 21, 2015. Local government leaders were invited by the pontifical academies of sciences and social sciences to sign a declaration recognizing that climate change and extreme poverty are influenced by human activity. (CNS/Paul Haring)
Pope Francis addresses mayors from around the world at a workshop on climate change and human trafficking in the synod hall at the Vatican July 21, 2015. (CNS/Paul Haring)