Models painted in camouflage colours to blend in with the background pose for Chinese artist Liu Bolin's artwork “Dongji”, or Winter Solstice, on the second day after China's capital Beijing issued its second ever “red alert” for air pollution, in Beijing, China, December 20, 2015. In this artwork, Liu wants to express his concerns about China and its people, including air pollution problem, Liu told Reuters. (Photo by Kim Kyung-Hoon/Reuters)

In this December 22, 2015, photo, Rayani Air flight crews prays before departure at Kuala Lumpur International Airport 2 in Sepang, Malaysia. Malaysia's Rayani Air took to the skies over the weekend with a clear bailiwick. It is the country's first Islamic airline, offering flights that adhere to Islamic rules including prayers, no-alcohol, no-pork meals, and a strict dress code for Muslim female flight attendants. (Photo by Joshua Paul/AP Photo)

Ultra Orthodox Jews look at the body of an alleged Palestinian assailant in Jerusalem Saturday, December 26, 2015. According to a police spokeswoman, policemen approached a man who drew their suspicions just outside the Old City for following a pair of Jewish worshippers. Then he pulled out a knife and tried to stab one of them, officers opened fire and killed the assailant. (Photo by Mahmoud Illean/AP Photo)

Visitors view Patricia Piccinini's “The Embrace” artwork during the “You Know Who” exhibition at the Abdulmecit Efendi mansion in Istanbul, Turkey, 27 September 2022. The exhibition, which by the organizers is described as questioning “the representation of the unknown in contemporary art, based on the symbolic world of the supernatural and unknown in the Byzantine period”, is shown from 20 September until 11 December 2022. (Photo by Erdem Sahin/EPA/EFE/Rex Features/Shutterstock)

Olivia Munn looks stunning in a holiday fashion campaign. The US actress shows off her sophisticated and elegant side in images shot for La Ligne's latest holiday 2022 campaign. The Magic Mike star showcases her toned legs in pictures, photographed by Pamela Hanson at the Hotel Chelsea in New York City on December 8, 2022. (Photo by Pamela Hanson/The Mega Agency)

A man uses a snow blower to clear a sidewalk during a winter storm ahead of the Christmas Holiday outside the Union Station, in Chicago on December 22, 2022. More than 2,200 flights were canceled across the United States by Thursday afternoon as a massive winter storm named Elliot upended holiday travel plans with a triple threat of heavy snow, howling winds and bitter cold (Photo by Kamil Krzaczynski/AFP Photo)

An eight-week-old sea otter rescued from Seldovia, Alaska, peaks out of his enclosure at Shedd Aquarium Wednesday, December 6, 2023, in Chicago. The otter was found alone and malnourished and was taken to the Alaska SeaLife Center in Seward, Alaska, which contacted Shedd, and the Chicago aquarium was able to take the otter in. He will remain quarantined for a few months while he learns to groom and eat solid foods before being introduced to Shedd's five other sea otters. (Photo by Erin Hooley/AP Photo)

Young dancers practice by the Kenya – Uganda railway line, prior to the start of a Christmas ballet event in Kibera, the Kenyan capital's largest slum, Friday, December 15, 2023. The ballet project is run by Project Elimu, a community-driven nonprofit that offers after-school arts education and a safe space to children in Kibera. (Photo by Brian Inganga/AP Photo)