A worker carries a bag of salt after collecting it from a pond at the Maras mines in Cuzco December 3, 2014. Salt has been obtained in Maras since pre-Incan times by evaporating highly salty local subterranean stream water. The water is intricately channelled through constructions, flowing gradually down onto several hundred ancient terraced ponds. From each pond, a local member of the mine cooperative can produce 150 to 200 kilos per month which can be sold in the markets at $0.34 per kilogram, according to miners. (Photo by Enrique Castro-Mendivil/Reuters)

A laborer works at an upside-down house under construction at Fengjing Ancient Town, Jinshan District, south of Shanghai, March 17, 2014. Workers are putting the final touches on this eccentric tourist attraction built at the “China Folk Painting Village”. Furniture will also be placed upside down in the house, which is expected to open the public in April, according to local media. (Photo by Carlos Barria/Reuters)

Fiona McGarva holds one of the sculptures from the art installation Gratitude at The Forth Bridge at North Queensferry on September 15, 2021, ahead of going on display just outside of Edinburgh at Newhailes House and Gardens from Friday 17th September. The public art installation pays tribute to NHS staff and all key workers for their ongoing courage and dedication during the Covid-19 pandemic. (Photo by Andrew Milligan/PA Images via Getty Images)

A worker cleans the statue of Yuri Gagarin, the first person who flew to space, ahead of Cosmonautics Day celebrated on April 12, in Moscow, Russia, Wednesday April 10, 2019. Cosmonautics Day marks when Soviet cosmonaut Yuri Gagarin became the first man to fly in space, in 1961, orbiting the earth once before making a safe landing. (Photo by Maxim Marmur/AP Photo)

A grey-bellied Night Monkey (Aotus Lemurinus) plays with a teddy bear at the veterinary clinic of the Cali Zoo in Cali, Colombia on January 27, 2020. They monkey is being raised by personnel of the Cali Zoo after a worker found it near the complex. Apparently it fall from a tree with his father who had health problems. (Photo by Luis Robayo/AFP Photo)

A medical worker wearing a full protective outfit tests a man for Covid-19 symptoms in a street in Wuhan, China, 01 April 2020. Wuhan, the epicenter of the coronavirus outbreak, partly lifted the lockdown allowing people to enter the city after more than two months. According to Chinese government figures over 2,500 people have died of Covid-19 in Wuhan since the outbreak began. (Photo by Roman Pilipey/EPA/EFE)

A restaurant worker wearing a mask cleans the windows as the restaurant reopens amid the COVID-19 pandemic in Sao Paulo, Brazil, Monday, July 6, 2020. Bars, restaurants and beauty salons were allowed to re-open Monday after over three months of quarantine, and are required to observe preventative measures and reduced operating hours only during the day. (Photo by Andre Penner/AP Photo)

Participants of the “Still Standing for Culture” action of the cultural sector rally in Les Marolles neighborhood of Brussels, Belgium, 13 March 2021. Workers of the cultural sector along with second-hand dealers of the Jeu de Balle place gathered in Les Marolles to denounce the lack of financial support and call for solutions to the impact of the coronavirus crisis on culture professionals and the sector as a whole one year after the Covid-19 pandemic lockdowns started. (Photo by Stephanie Lecocq/EPA/EFE)