Children ride on the back of a truck at a camp for internally displaced people (IDPs) in Marib, Yemen on September 9, 2021. (Photo by Ali Owidha/Reuters)

Orphaned mountain gorilla, Ndakasi, lies in the arms of her caregiver, Andre Bauma, on September 21, 2021 shortly before her death, which the park confirmed on September 26. Mr Bauma and others at the Senkwekwe Mountain Gorilla Center had cared for Ndakasi and other orphans for 13 years. Ndakasi had suffered a prolonged illness prior to her death. This is the only mountain gorilla orphanage in the world and takes in mountain gorilla orphans who have lost their families to poaching or conflict. A number of the orphans here were rescued from sales by poachers in sting operations carried out by Congolese National Park Authority (ICCN) rangers. (Photo by Brent Stirton/Getty Images)

A woman wearing in face mask to curb the spread of COVID-19 passes street's cafe in Kyiv, Ukraine, Friday, October 22, 2021. Coronavirus infections and deaths in Ukraine have surged to all-time highs amid a laggard pace of vaccination, which is one of the lowest in Europe. (Photo by Efrem Lukatsky/AP Photo)

A boy stands near the rotting carcass of a camel that that died of hunger which people had burned to stop the bad smell, in Belif, Garissa county, Kenya on Sunday, October 24, 2021. (Photo by Brian Inganga/AP Photo)

People walk in the rain in Hyderabad, India, Saturday, November 20, 2021. More than a dozen people have died and dozens are reported missing in the southern Indian state of Andhra Pradesh after days of heavy rains, authorities said. (Photo by Mahesh Kumar A./AP Photo)

A dancer spits fire during a slum party at Oworonshoki district of Lagos, on November 27, 2021. In Oworonshoki, a poor district of Lagos, Nigeria's economic capital, an emerging artistic dance activists, Ennovate Dance House, is changing the narratives of the slum cummunity. The community which in the past was always in the bad news for cultism, violence and killings, suddenly is attracting tourist attention with a “Slum Party”, a yearly artistic dance festival being used by the group to give life and hope to the inhabitants. (Photo by Pius Utomi Ekpei/AFP Photo)

Glam revellers have proudly shown off their vaccine passports as they glammed up for a night on the town on the first day of fresh Covid restrictions in Newcastle, United Kingdom on December 15, 2021. Brits donning festive gear decided to tear up nightclub dance floors and booze in pubs despite fears over the Omicron variant. (Photo by Newcastle New Projects)

A resident receives a dose of Pfizer BioNTech COVID-19 vaccine at a rural village on December 01, 2021 in Aringay, La Union province, Philippines. The Philippines is rushing to vaccinate its population as it mulls making COVID-19 vaccination mandatory and amid the looming threat of the Omicron variant of the coronavirus. The country, which has just approved booster shots for its adult population, launched a three-day national vaccination holiday on November 29 to December 1 with the goal of vaccinating at least nine million additional people. (Photo by Ezra Acayan/Getty Images)