A Chinese tourist uses the scarf of a friend as she is helped while she and others struggle to climb in the wind on an icy section of the Great Wall at Badaling, on a cold day after a snowfall on November 30, 2019 in Beijing, China. (Photo by Kevin Frayer/Getty Images)

A hiker walks in the Zillertal Alps during an autumn day near the village of Ginzling, Austria, October 15, 2019. (Photo by Lisi Niesner/Reuters)

Riot police detain a woman during a protest near Mong Kok police station in Hong Kong, China on September 7, 2019. (Photo by Tyrone Siu/Reuters)

A Malaysian Royal Guard wears a protective mask while he stands guard outside National Palace, following the outbreak of a new coronavirus in China, in Kuala Lumpur, Malaysia, February 10, 2020. (Photo by Lim Huey Teng/Reuters)

Russian Boxing Federation lifts a portrait of late Soviet leader Joseph Stalin with a hot air balloon, close to city of Belogorsk outside Simferopol, Crimea, on May 11, 2020, to mark the 75th anniversary of the end of World War II also called the Great Patriotic War, amid the coronavirus (COVID) pandemic. (Photo by AFP Photo/Stringer)

Tatyana Abramova, 33, plays with her home fox Plombir at her countryside house outside Siberian city of Novosibirsk on September 12, 2020. The official start of the Soviet experiment to better understand the domestication of animals by humans began in 1959, and was initiated by geneticists Dmitri Beliaiev and Lioudmila Trout on a farm in Akademgorodok, the scientific center of excellence in Siberia. Their primary objective was to domesticate foxes, to understand how the ancestor of wolves, another canine, evolved into a loyal and loving dog. And understand what this domestication tells us about the genetic evolution of species. (Photo by Alexander Nemenov/AFP Photo)

A police officer speaks to a driver shortly after midnight in Bucharest, Romania, Monday, November 9, 2020 informing him of the pandemic related night traffic restrictions that just came into effect. Romania introduces new restrictions aimed at limiting the spread of the COVID-19 infections following a week when it registered an all time high number of new infections. (Photo by Vadim Ghirda/AP Photo)

A woman wearing a face mask takes a photo on her phone in Covent Garden, London, Thursday, December 3, 2020. Britain became the first country in the world to authorize a rigorously tested COVID-19 vaccine Wednesday and could be dispensing shots within days – a historic step toward eventually ending the outbreak that has killed more than 1.4 million people around the globe. (Photo by Alberto Pezzali/AP Photo)