A clown poses for a picture in a parade during Salvadoran Clown Day celebrations in San Salvador, El Salvador, December 7, 2016. (Photo by Jose Cabezas/Reuters)
A combination picture shows Aleppo's Umayyad mosque, Syria, before it was damaged on March 12, 2009 (top) and after it was damaged (bottom) December 13, 2016. (Photo by Omar Sanadiki/Reuters)
A passenger inter-island ferry Shuttle RoRo 5 is pictured after it was swept ashore at the height of Typhoon Nock-Ten in Mabini, Batangas in the Philippines December 26, 2016. (Photo by Erik De Castro/Reuters)
An aircraft passes over houses at it lands at Heathrow Airport near London, Britain, December 11, 2015. Picture taken December 11, 2015. (Photo by Neil Hall/Reuters)
View of an American marine as he lies in a foxhole and whistles at a husky, one of the scouting dogs used during the landing on Guam, August 1944. (Photo by W. Eugene Smith/Time & Life Pictures/Getty Images)
The world-famous sprinter Usain Bolt, 30, took a break from the track to celebrate Carnival as revellers doused each other with paint in Trinidad and Tobago on February 26, 2017. (Photo by David Wears/Splash News and Pictures)
Race goers are pictured during the Investec Ladies Day at Epsom Downs Racecourse on June 2, 2017 in Epsom, England. (Photo by News Group Newspapers Ltd)