An environmental activist adjusts his mask while taking part in “The Dead Sea Swim Challenge”, swimming from the Jordanian to Israeli shore, to draw attention to the ecological threats facing the Dead Sea, in Kibbutz Ein Gedi, Israel November 15, 2016. Swimmers from around the world plunged into the salty waters of the Dead Sea on Tuesday to attempt a seven-hour swim across the fabled lake in a bid to draw attention to its environmental degradation. Wearing protective masks and snorkels, 25 swimmers paddled through the muddy water to attempt the 9-mile (15-kilometer) swim from Jordan to Israel. (Photo by Nir Elias/Reuters)

A cadet from the Interior Ministry with the word Fidel painted on her face attends a rally honoring the late Cuban leader at the Revolution Plaza in Havana, Cuba, Tuesday, November 29, 2016. Schools and government offices were closed Tuesday for a second day of homage to Fidel Castro, with the day ending in a rally on the wide plaza where the Cuban leader delivered fiery speeches to mammoth crowds in the years after he seized power.Fidel Castro passed away Friday Nov. 25. He was 90. (Photo by Ramon Espinosa/AP Photo)

Fighters of the Free Syrian Army fire an anti-aircraft weapon in the rebel-held Mashhad area in southeastern Aleppo, on December 12, 2016, as they battle Syrian government forces during an operation to retake the embattled city. The crucial battle for Aleppo entered its “final phase” after Syrian rebels retreated into a small pocket of their former bastion in the face of new army advances. The retreat leaves opposition fighters confined to just a handful of neighbourhoods in southeast Aleppo, the largest of them Sukkari and Mashhad. (Photo by AFP Photo/Stringer)

Mexico City resident Romina Montoya takes a playful selfie wearing a protective face mask over her eyes and nose, in Playa del Carmen, Quintana Roo state, Mexico, Wednesday, January 6, 2021. Concern is spreading that the critical winter holiday tourism success could be fleeting because it came as COVID-19 infections in both Mexico and the United States were reaching new heights. (Photo by Emilio Espejel/AP Photo)

Supporters of former Haitian President Jean-Bertrand Aristide dance and drum as they wait near the airport for his expected arrival from Cuba, where he underwent medical treatment, in Port-au-Prince, Haiti, Friday, July 16, 2021. Aristide's return adds a potentially volatile element to an already tense situation in a country facing a power vacuum following the July 7 assassination of President Jovenel Moïse. (Photo by Fernando Llano/AP Photo)

A giant classic Hindu Ramayana statue dons a face mask to remind passengers to keep to coronavirus precautions at the Suvarnabhumi airport in Bangkok, Thailand, Wednesday, July 21, 2021. The Civil Aviation Authority of Thailand has ordered a halt to all domestic flights operating from the most severely affected provinces effective Wednesday. Exceptions are allowed for flights to destinations that are part of a plan that allows vaccinated travelers from abroad to stay for two weeks on popular islands such as Phuket and Samui without quarantine confinement. (Photo by Sakchai Lalit/AP Photo)

Men play cricket in Kabul, Afghanistan, 16 September 2021. A humanitarian crisis and alleged widespread human rights violations are among the top challenges Afghanistan faces a month after the Taliban's lightning-fast capture of Kabul. The economic crisis threatened to push 97 percent of the 40 million people into poverty by mid-2022, the United Nations has warned. (Photo by EPA/EFE/Stringer)

A pedestrian wearing a face mask to protect against coronavirus, walks in front of a mural, at a metro station in Athens, Greece, Monday, November 15, 2021. Authorities say the rate of death related to COVID-19 in Greece has reached its highest level in six months as roughly one-third of the country's population remains unvaccinated. (Photo by Thanassis Stavrakis/AP Photo)