A Brazilian slum, or favela, and a cross. Pope Francis’s Encyclium addresses urban poverty and inequality as well as climate change. Chico Ferreira/Flickr

A Brazilian slum, or favela, and a cross. Pope Francis's Encyclium addresses urban poverty and inequality as well as climate change. Chico Ferreira/Flickr

A Brazilian slum, or favela, and a cross. Pope Francis’s Encyclium addresses urban poverty and inequality as well as climate change. Chico Ferreira/Flickr

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