The Borealis in the second decade of December 2023 gets ready to leave Liverpool for the Classic Christmas Markets cruise. It will call at Zeebrugge, Amsterdam and Hamburg to take in some of Europe’s best festive markets. (Photo by Bav Media)

Students wearing masks as a precaution amid the spread of COVID-19 put away a Cuban flag so it does not get wet in the rain on their first day of school after months without face-to-face classes in Havana, Cuba, Monday, November 8, 2021. As Cuba approaches the announced date of Nov. 15 for the reopening of the entire country to the world, getting children back to school is one of its priorities. (Photo by Ramon Espinosa/AP Photo)

People watch as lava flows from an eruption of a volcano on the Reykjanes Peninsula in southwestern Iceland late on Monday, March 29, 2021. Iceland's latest volcano eruption is still attracting crowds of people hoping to get close to the gentle lava flows. The eruption in Geldingadalur, near Iceland's capital Reykjavik, is not seen as a threat to nearby towns and the slow flows mean people can get close to action without too much harm. (Photo by Marco Di Marco/AP Photo)

Models get ready backstage before the presentation of the Etam Live Show Lingerie at the Fashion Week in Paris, France, September 27, 2016. (Photo by Charles Platiau/Reuters)

Brush your teeth and get cleaned up for the week ahead! These animals answered the call of good dental hygiene. Here: Hamster holds toothbrush. (Photo by Neo Vision/Getty Images/Amana Images RM)

A model gets ready backstage during the Tbilisi Fashion Week in Tbilisi, Georgia, on October 27, 2017. The presentation of the Spring/Summer 2018 collections runs from 27 to 30 October. (Photo by David Mdzinarishvili/Reuters)

A model gets her outfit arranged backstage before showcasing the collection by Zhang Kejia during the China Fashion Week in Beijing on March 26, 2019. (Photo by Nicolas Asfouri/AFP Photo)

A woman looks at a swimmer getting herself warm after the annual Christmas winter swimming competition in the Vltava river in Prague December 26, 2014. (Photo by David W. Cerny/Reuters)