VATICAN CITY, VATICAN - APRIL 28:  A general view of St. Peter's Basilica seen from the Vatican Gardens during the Seminar 'Protect the Earth, Dignify Humanity' Workshopat the Pontifical Academy of Sciences at Casina Pio IV on April 28, 2015 in Vatican City, Vatican. The one day international symposium has been organized by the Pontifical Academy of Sciences and will include a video message to participants from Pope Francis about the Christian imperative of stewardship of creation.  (Photo by Giulio Origlia/Getty Images)
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