This photo taken on May 20, 2020 shows elementary school students wearing wings to maintain social distancing amid concerns of the COVID-19 coronavirus, in a classroom in Taiyuan in China's northern Shanxi province. (Photo by AFP Photo/China Stringer Network)

Lydia Hassebroek, 10, uses a magnifying glass to light a leaf on fire in her backyard during the outbreak of the coronavirus disease (COVID-19) in Brooklyn, New York, U.S., May 17, 2020. (Photo by Caitlin Ochs/Reuters)

Guests are seen at the end of the Etro Spring/Summer 2021 Men's collection and Women's pre-collection livestreamed show at the Four Seasons hotel, amid the coronavirus outbreak, during Milan Digital Fashion Week in Milan, Italy, July 15, 2020. (Photo by Alessandro Garofalo/Reuters)

A Chinese woman wears a mask to protect from particles blown in during a sandstorm as she walks in the street on May 4, 2017 in Beijing, China. Sandstorms are common in northern China during the spring season and are caused when heavy winds from Mongolia in the north brings sand and pollutants that can blanket Chinese cities and cause air quality to deteriorate. (Photo by Kevin Frayer/Getty Images)

Children play on top of an abandoned car at the “Aguerridos Liberator” shanty town in Caracas, Venezuela, Thursday, May 9, 2019. (Photo by Rodrigo Abd/AP Photo)

A photo made available on 14 March 2016 shows a Thai villager takes selfie photograph on drought parched land at the dried up Mae Chang reservoir in Lampang province, northern Thailand, 12 March 2016. The ruined village including ancient temple had been underwater for 34 years since the Mae Chang reservoir was built in 1982, the area has now re-emerged after water in the reservoir dried up caused by the severe drought. Thailand is facing the worst drought in decades hardest hit by El Nino phenomenon combined with seasonal hot weather. (Photo by Rungroj Yongrit/EPA)

A Member of the Congress of South African Trade Unions (COSATU) joins other strikers as they take part in a nationwide strike over issues including corruption and job losses outside parliament in Johannesburg, South Africa, October 7, 2020. (Photo by Siphiwe Sibeko/Reuters)

People wear face masks as they ride an E-scooter in the Old Elbe Tunnel in Hamburg, Germany, Thursday, October 15, 2020. To avoid the spread of the coronavirus the use of a face mask in the 117-year-old tunnel under the Elbe river is mandatory. (Photo by Michael Probst/AP Photo)