Hamar women dance before a bull jumping ceremony in Ethiopia's southern Omo Valley region near Turmi on September 19, 2016. The Hamar are a Nilotic ethnic group in Ethiopia. The construction of the Gibe III dam, the third largest hydroelectric plant in Africa, and large areas of very “thirsty” cotton and sugar plantations and factories along the Omo river are impacting heavily on the lives of tribes living in the Omo Valley who depend on the river for their survival and way of life. (Photo by Carl De Souza/AFP Photo)

A girl holds her brother in her arm as black smoke rises after an oil well set on fire in the center of al-Kayyara town to the south of Daesh terror organization-held Mosul in Iraq on October 25, 2016. The oil well in the center of al-Kayyara town, which was set alight by retreating Daesh militants in advance of the Iraqi army's takeover of the town on August 24, 2016 has still not entirely been put out. The raw petrol which is still alight is creating black clouds above the city. The residents and wildlife beneath this polluting smoke cloud may find their health at risk. The effects of the fire in the town center on unprotected civilians' health can easily be seen on the hands and faces of children playing on the street. (Photo by dris Okuducu/Anadolu Agency/Getty Images)

Rebel fighters from the Jaish al- Fatah (or Army of Conquest) brigades manoeuver an alleged explosive- rigged make- shift armoured vehicle during a major assault on Syrian government forces West of Aleppo city on October 28, 2016 Syrian opposition fighters launched a major assault on government forces to break a months- long siege of rebel- held neighbourhoods of the battered city of Aleppo. Rebel groups including the powerful Ahrar al- Sham faction and former Al- Qaeda affiliate Fateh al- Sham Front fired waves of rockets into government- held western Aleppo, killing at least 15 civilians, a monitor said. (Photo by Omar Haj Kadour/AFP Photo)

Tami Varma, right, and her brother Robin, the grandchildren of Devendra Varma, a scholar of English gothic tales and an expert in vampire lore, pose in coffins at the Bran Castle, in Bran, Romania, Monday, October 31, 2016. A Canadian brother and sister are passing Halloween night curled up in red velvet coffins in the Transylvanian castle that inspired the Dracula legend, the first time in 70 years anyone has spent the night in the gothic fortress, after they bested 88,000 people who entered a competition hosted by Airbnb to get the chance to dine and sleep at the castle in Romania. A portrait of medieval prince Vlad the Impaler is placed on the wall. (Photo by Vadim Ghirda/AP Photo)

Clay "caganers" representing Spanish Prime Minister Mariano Rajoy (2nd L), Podemos's candidate Pablo Iglesias (R), Socialist Party (PSOE) leader Pedro Sanchez (2nd R) and Ciudadanos party leader Albert Rivera (L) are seen on display at the Santa Llucia Christmas market in central Barcelona, Spain, December 16, 2015. Catalans hide “caganers” or defecators, in Christmas Nativity scenes to let friends hunt for them during Christmas celebrations. The “caganers”, which symbolise defecation and fertilization of the earth, are believed to bring prosperity and luck for the coming year. (Photo by Albert Gea/Reuters)

A Gnawa traditional group performs in the city of Essaouira on December 14, 2019, to celebrate the decision of adding the Gnawa culture to UNESCO's list of Intangible Cultural Heritage of Humanity. Gnawa culture, a centuries-old Moroccan practice rooted in music, African rituals and Sufi traditions, was added to UNESCO's list of Intangible Cultural Heritage of Humanity earlier in the week. Gnawa refers to a “set of musical productions, fraternal practices and therapeutic rituals where the secular mixes with the sacred”, according to the nomination submitted by Morocco. Often dressed in colourful outfits, Gnawa musicians play the guenbri, a type of lute with three strings, accompanied by steel castanets called krakebs. (Photo by Fadel Senna/AFP Photo)

Russian policemen detain a participant taking part in an unauthorized protest against Russia's partial military mobilization due to the conflict in Ukraine, in downtown of Moscow, Russia, 24 September 2022. Russian President Putin announced in a televised address to the nation on 21 September, that he signed a decree on partial mobilization in the Russian Federation. Russian citizens who are in the reserve will be called up for military service. On 24 February 2022 Russian troops entered the Ukrainian territory in what the Russian president declared a “Special Military Operation”, starting an armed conflict that has provoked destruction and a humanitarian crisis. (Photo by Maxim Shipenkov/EPA/EFE)

Russian policemen detain a person taking part in an unauthorized protest against Russia's partial military mobilization due to the conflict in Ukraine, in downtown Moscow, Russia on 24 September 2022. Russian President Putin announced in a televised address to the nation on 21 September, that he signed a decree on partial mobilization in the Russian Federation. Russian citizens who are in the reserve will be called up for military service. On 24 February 2022 Russian troops entered the Ukrainian territory in what the Russian president declared a “Special Military Operation”, starting an armed conflict that has provoked destruction and a humanitarian crisis. (Photo by Maxim Shipenkov/EPA/EFE)