A displaced Iraqi girl reacts as she flees her home in Mamoun district as Iraqi forces battle with Islamic State militants, in western Mosul, Iraq March 1, 2017. (Photo by Zohra Bensemra/Reuters)





A boy dressed as a Star Wars character Darth Vader, as part of the Carnival celebrations, poses for a photo in the San Miguel neighborhood of the Cota 905 sector, in Caracas, Venezuela, 28 February 2017. (Photo by Miguel Gutierrez/EPA)





An injured woman holds an injured child at a hospital, after alleged airstrikes by forces loyal to the Syrian government hit areas inhabited by civilians in Barzeh, near Damascus, 20 February 2017. According to local witnesses, the airstrikes on the neighborhoods of Barzeh, al-Qabun, and Tishreen near Damascus had started three days earlier and resulted in the death of at least seven people and injury of some 33 others. (Photo by Sarieh Abu Zaid/EPA)





A Chinese girl going out from the Ethiopian section of the Church of the Holy Sepulchre in Jerusalem's Old City, Israel, 27 March 2017. (Photo by Abir Sultan/EPA)





A boy looks at a flock of dead goats in a dry land close to Dhahar in Puntland, northeastern Somalia, on December 15, 2016. Drought in the region has severely affected livestock for local herdsmen. (Photo by Mohamed Abdiwahab/AFP Photo)





Locals form long lines at a public vaccination post to receive their inoculation against yellow fever in Rio de Janeiro, Brazil on March 20, 2017, after the confirmation of the first death from yellow fever in the State. (Photo by Antonio Lacerda/EPA)





A child interacts with an utility dog at a facility for children in Bucharest, Romania, Friday, February 17, 2017. An association for utility dogs organized a session of animal therapy for children affected by the Down Syndrome. (Photo by Vadim Ghirda/AP Photo)





Children play with water in Madureira Park in Rio de Janeiro, Brazil February 12, 2017. (Photo by Pilar Olivares/Reuters)





A Haitian migrant helps her mother to carry clean clothing at an Evangelical Church, being used as a shelter for stranded immigrants on their way to the U.S., in Tijuana, Mexico, February 12, 2017. (Photo by Jorge Duenes/Reuters)





A baby is weighted on a scale in a health clinic in the capital Juba, South Sudan, January 23, 2017. (Photo by Siegfried Modola/Reuters)





Natan Cabral, 5, stands on the cracked ground of the Boqueirao reservoir in the Metropolitan Region of Campina Grande, Paraiba state, Brazil, February 13, 2017. (Photo by Ueslei Marcelino/Reuters)





A girl takes a selfie with Pope Francis during a visit to the parish of St. Mary Josefa of the Heart of Jesus in Rome, Italy February 19, 2017. (Photo by Remo Casilli/Reuters)





A boy plays an instrument in downtown Mexico City, Mexico, February 19, 2017. (Photo by Jose Luis Gonzalez/Reuters)





A boy receives polio vaccination drops during a house-to-house vaccination campaign in Sanaa, Yemen February 20, 2017. (Photo by Khaled Abdullah/Reuters)





A child looks at pigs, of the Porcs Blancs de l'Ouest race, February 21, 2017 at a farm in Plesse, France, ahead of the 2017 Paris International Agricultural Show. (Photo by Stephane Mahe/Reuters)





A boy jumps into a pool of mud during the traditional “Bloco da Lama” or “Mud Street” carnival party, in Paraty, Brazil, Saturday, February 25, 2017. Legend has it the “bloco” was born in 1986 after local teens hiking in a nearby mangrove forest smeared themselves with mud to discourage mosquitoes and then wandered through Paraty. The party grew year after year, but revelers eventually were banned from parading in the colonial downtown after shopkeepers complained pristine white walls were stained with the hard-to-remove mud. (Photo by Mauro Pimentel/AP Photo)





Nigerian children sit outside a polling station in the neighbourhood of Isale-Eko in central Lagos, April 14, 2007. Nigerians went to the polls on Saturday to choose state governors in the first of two elections which should lead to the first fully democratic transition in Africa's most populous nation and top oil producer. (Photo by Finbarr O'Reilly/Reuters)