A boy moves away as a United Nations World Food Programme (WFP) helicopter lands in Rubkuai village, Unity State, northern South Sudan, February 18, 2017. South Sudan on Monday declared famine in some parts of the country, with more than three years of war leaving nearly five million hungry in what aid groups called a “man-made” tragedy. (Photo by Siegfried Modola/Reuters)

A government awareness poster for wearing surgical masks is seen reflected and upside-down in the Dambovita river in Bucharest, Romania, 19 November 2020. The poster, depicting a man wearing a surgical mask, reads: “I WEAR A MASK BECAUSE I KNOW THAT ONLY TOGETHER WE WILL SUCCEED!”. As the number of COVID-19 infections increased, authorities decided that wearing a protective mask should become mandatory at all times in all public places. (Photo by Robert Ghement/EPA/EFE)

A woman takes a photo of a mural by Berlin-based street artist Eme Freethinker featuring the likeness of US actor Will Smith (R) slapping US comedian Chris Rock during the Oscars ceremony, in Berlin on March 30, 2022. (Photo by John MacDougall/AFP Photo)

Runner-up; Hon Yen marine ecosystem. Phu Yen, Vietnam. Every year between May and August, the coral of this rich and diverse ecosystem becomes exposed at low tide. (Photo by Truong Hoai Vu/Royal Society of Biology Photography Competition)

The solar eclipse is seen above the Washington Monument on April 08, 2024 in Washington, DC. People have traveled to areas across North America that are in the “path of totality” in order to experience the eclipse today. The next total solar eclipse that can be seen from a large part of North America won't happen until 2044. (Photo by Chip Somodevilla/Getty Images)

Visitors are seen inside a newly opened bookstore in Chongqing, China on January 29, 2019. Covering an area of 1,400 square meters, the Zhongshuge Bookstore in Chongqing attracts readers with its creative decor. (Photo by Reuters/China Stringer Network)

A woman lies face-down on the floor where other race-goers are standing on 2017 Derby Day at Flemington Racecourse on November 4, 2017 in Melbourne, Australia. (Photo by Splash News and Pictures)

The Big Island's Mauna Loa Volcano erupts on November 28, 2022 on the Island of Hawaii. For the first time in almost 40 years, the biggest active volcano in the world erupted prompting an emergency response on the Big Island. (Photo by Andrew Richard Hara/Getty Images)