A duck salesman parades his stock to commuters at a busy station in Dhaka, Bangladesh on May 23, 2018. (Photo by Nazmul Hasan Khan/Caters News Agency)

This undated photo provided by NOAA in May 2018 shows aurora australis near the South Pole Atmospheric Research Observatory in Antarctica. When a hole in the ozone formed over Antarctica, countries around the world in 1987 agreed to phase out several types of ozone-depleting chemicals called chlorofluorocarbons (CFCs). Production was banned, emissions fell and the hole shriveled. But according to a study released on Wednesday, May 16, 2018, scientists say since 2013, there’s more of a banned CFC going into the atmosphere. (Photo by Patrick Cullis/NOAA via AP Photo)

Members of the China Disabled People’s Performing Art Troupe take part in the thousand-hand Bodhisattva dance in Mississauga, Canada on November 8, 2018. (Photo by Zou Zheng/Xinhua News Agency/Barcroft Images)

A devotee in trance mimics a beast during a religious tattoo festival at Wat Bang Phra monastery, where devotees believe that their tattoos have mystical powers, in Nakhon Pathom province, Thailand, March 16, 2019. (Photo by Athit Perawongmetha/Reuters)

Secondary school graduates play in a fountain as they celebrate the last day of school, traditionally called the “last bell” in central Kiev, Ukraine on May 31, 2019. (Photo by Valentyn Ogirenko/Reuters)

Drinking from a helmet at a graduation ceremony held by the Military University of the Russian Defence Ministry at Moscow's Victory Park in Moscow, Russia on June 15, 2019. (Photo by Gavriil Grigorov/TASS)

A woman cries while being escorted by police officers during an anti-government protest in Santiago, Chile, 07 November 2019. A proposed increase in the price of metro fares sparked a series of anti-government protests that have left at least 20 people dead. The protestors are demanding improvements in the quality of healthcare, education and general distribution of wealth in Chile. (Photo by Orlando Barría/EPA/EFE)

A woman tries to cross a flooded street as people walk on a trestle bridge during high water, in Venice, northern Italy, Friday, November 15, 2019. Exceptionally high tidal waters returned to Venice on Friday, prompting the mayor to close the iconic St. Mark’s Square and call for donations to repair the Italian lagoon city just three days after it experienced its worst flooding in 50 years. (Photo by Andrea Merola/ANSA via AP Photo)