A girl walks past a destroyed mosque in the town of Mararaba, after the Nigerian military recaptured it from Boko Haram, in Adamawa state May 10, 2015. (Photo by Akintunde Akinleye/Reuters)

Mrs. Marie Graskamp of Milwaukee shows the different positions one might assume when entering the bomb shelter in Milwaukee September 3, 1958. This circular entrance is about three feet in diameter. This is the entrance (according to the builders) that would connect to the cellar of a home assuming the shelter was in the ground for added protection. If a bombing should occur, all members of family would proceed to the cellar and then through the circular port into the shelter. (Photo by AP Photo)

Sellers sort persimmons for sale at a wholesale market in Hanoi, Vietnam October 3, 2016. (Photo by Reuters/Kham)

A migrant holds a placard which reads “No Forced Deportations” as he rides his bicycle at the makeshift camp called “The New Jungle” in Calais, France, September 18, 2015. Around 3,500 migrants and refugees are camped in Calais, fleeing war and poverty in the Middle East, Africa and Asia and now living in the jungle. Most of them are hoping to make the crossing to England. (Photo by Regis Duvignau/Reuters)

Londoners sleep on the platform and on the train tracks at Aldwych Underground station,London, during heavy all night Nazi bombing raids, October 8, 1940. (Photo by AP Photo)

DJ Evans Mireku Kissi (R) and fashion stylist Daniel Quist ride a motorcycle in front of a street side bar in Accra, Ghana. June 10, 2015. Young artists in Ghana's capital have evolved a new style that is turning heads and challenging accepted notions of African fashion. (Photo by Francis Kokoroko/Reuters)

A rickshaw driver looks out the windshield as he drives onto the highway in Mardan, Pakistan January 30, 2017. (Photo by Fayaz Aziz/Reuters)

Sonam Kapoor, Jourdan Dunn and Lil' Kim attend the Ralph & Russo Haute Couture Fall/Winter 2016-2017 show as part of Paris Fashion Week on July 4, 2016 in Paris, France. (Photo by Samir Hussein/WireImage)