Journalists wear face mask and keep distance as they attend news conference by German Health Minister Jens Spahn about the developing of the coronavirus crisis test strategy in Berlin, Germany, Thursday, August 6, 2020. (Photo by Markus Schreiber/AP Photo)

Local people check the growth of mussels at a river in Haian County on November 2, 2017 in Nantong, Jiangsu Province of China. Fish, shrimp, crab and mussel farming cleans the river and increases the villagers' income at Haian county in Jiangsu. (Photo by VCG/VCG via Getty Images)

In this November 30, 2017 photo, Douglas scoops up mud from the bottom of the polluted Guaire River, in search of gold and anything valuable he can sell, in Caracas, Venezuela. Some stretches of the river smell of sewer while others emit a toxic odor of fuel, a stench that stays in ones nose for hours after leaving the water. (Photo by Ariana Cubillos/AP Photo)

(L-R) Chris Diamantopoulos, AnnaLynne McCord, Matt Jones and Jane Seymour visit the Build Series at Build Studio on January 23, 2018 in New York City, United States. (Photo by Brad Barket/Getty Images)

Visitors make snowmen beside a pool at a hot spring in Hangzhou, in China's eastern Zhejiang province on January 26, 2018. China's central and eastern regions have been hit by heavy snowfalls in recent days, causing disruptions to flight and train schedules. (Photo by AFP Photo/China Stringer Network)

A participant wearing a cosplay costume attends the Japan Expo in Marseille, France, February 22, 2019. (Photo by Jean-Paul Pelissier/Reuters)

A model displays a creation by Portuguese designer David Ferreira on the second day of the Lisbon Fashion Week, at the Carlos Lopes Pavillion in Lisbon, Portugal, 09 March 2019. (Photo by Miguel A. Lopes/EPA/EFE)

A barber cuts hair of his client at a shuttered market during the countrywide traders strike in Lahore on October 29, 2019. Pakistani traders have joined hands to observe a nationwide shutterdown strike against the government over its “anti-business” policies, seeking to bring trade and economic activities across the country to a standstill on October 29 and 30. (Photo by Arif Ali/AFP Photo)