Members of security forces secure Tahrir Square in Cairo, Egypt, November 11, 2016. Egypt imposed a big security clampdown in its cities on Friday as mass demonstrations called to protest against austerity measures failed to take place. Riot police and armored vehicles filled the otherwise empty streets of central Cairo, but most people stayed at home. (Photo by Mohamed Abd El Ghany/Reuters)

Britain's Catherine, Duchess of Cambridge, shelters from the rain under an umbrella as she arrives at the London School of Economics to mark the launch of The Royal Foundation Centre for Early Childhood, where she took part in a roundtable discussion on the Centre's inaugural report, “Big Change Starts Small” which was released today, in London on June 18, 2021. (Photo by Richard Pohle/Pool via AFP Photo)

Luciana Benetti, 16, feeds her pet pig Chanchi, given to her for a birthday present the previous year in Buenos Aires, Argentina, Saturday, September 4, 2021. As the new coronavirus began to circulate last year, Benetti found her plans for a big traditional 15th birthday party scrapped. In its place, her parents gave her a pig. (Photo by Natacha Pisarenko/AP Photo)

A volunteer operates a remote controlled disinfection robot to disinfect a residental area amid the COVID-19 coronavirus outbreak in Wuhan in China's central Hubei province on March 16, 2020. China tightened quarantine measures for international arrivals on March 16 as the country worries about a rise in imported cases of the deadly coronavirus and anger rages online at how Europe and the United States are handling the pandemic. (Photo by AFP Photo/China Stringer Network)

This aerial picture taken on August 16, 2020, shows the MV Wakashio bulk carrier that had run aground and broke into two parts near Blue Bay Marine Park, Mauritius. A ship that has leaked more than 1,000 tonnes of oil in pristine waters off the Mauritius coast has split into two, its Japanese operator said August 16, 2020. (Photo by AFP Photo/Stringer)

A model of the New Horizons spacecraft is seen at a live television program on NASA television celebrating the spacecraft's closest proximity to Pluto, at Johns Hopkins University Applied Physics Laboratory, site of the mission operations center, in Laurel, Maryland, USA, 14 July 2015. At approximately 7:49 am ET (11:49 am GMT), 14 July, New Horizons was scheduled to be as close to Pluto as the spacecraft will get; about 7,800 miles (12,500 kilometers) above the surface, following a journey of more than nine years and three billion miles. This is the first mission to the Pluto System and the Kuiper Belt. (Photo by Michael Reynolds/EPA)

Sete Tamang, 20, avalanche survivor, waits to receive the bodies of his colleagues outside a morgue at Teaching Hospital in Katmandu, Nepal, Monday, October 20, 2014. Nepal was wrapping up rescue operations in its northern mountains Monday, saying all the hikers believed to have been stranded on a trekking route by a series of deadly blizzards are now safe. (Photo by Niranjan Shrestha/AP Photo)

“Dubai is sometimes called the “City of Gold” because of its stunning growth from a sleepy Gulf port to a world-famous business crossroads in the space of a single generation. Its nickname has a literal meaning for traders in the precious metal. The city is building itself up as a center for the gold trade, between sources in Africa and consumers in the rising economies of China and India”. – Kamran Jebreili via Associated Press

Photo: A gold press operator collects 10 gram gold blanks to press them with the logo of the Emirates Gold company in Dubai, United Arab Emirates. Gold prices remained relatively steady in 2012, close to $1,700 an ounce. (Photo by Kamran Jebreili/AP Photo)