Models painted in camouflage colours to blend in with the background pose for Chinese artist Liu Bolin's artwork “Dongji”, or Winter Solstice, on the second day after China's capital Beijing issued its second ever “red alert” for air pollution, in Beijing, China, December 20, 2015. In this artwork, Liu wants to express his concerns about China and its people, including air pollution problem, Liu told Reuters. (Photo by Kim Kyung-Hoon/Reuters)

Chinese aids activists hand out condoms in a subway train in Wuhan, central China's Hubei province on December 1, 2014. The World Health Organization issued a call to action to China on December 1, 2014 over HIV/AIDS as government figures said nearly half a million people are living with the disease or its precursor, with hundreds of thousands more thought to be undiagnosed. (Photo by AFP Photo)

Celebrities including singer Nicole Scherzinger and actor Simon Pegg have been snapped by top photographer Rankin for an Oxfam campaign. All in all, a dozen well-known faces have been captured in various poses to highlight the charity's Lift Lives for Good campaign. The fundraising drive, launched at the start of the year, aims to shine a light on the work done by the charity to help poor people around the world. Photo: Undated handout photo issued by Oxfam of Caroline Flack who took part in a photo shoot with top photographer Rankin for Oxfam's Lift Lives for Good campaign. (Photo by Rankin/PA Wire)

North Korean commuters are seen through a door window waiting to board a train in a subway train station in Pyongyang, North Korea, 14 April 2017. North Koreans are preparing to celebrate the “Day of the Sun” festival, commemorating the 105th birthday anniversary of former supreme leader Kim Il-sung on 15 April, as tension over nuclear issues rise in the region. (Photo by How Hwee Young/EPA)

Students run past a burning barricade set up by protesters demanding the release of kidnapped people, in Port-au-Prince, Haiti, Thursday, November 25, 2021. The country is experiencing a rise in gang-related kidnappings, many demanding ransom, with the U.S. State Department issuing a warning in Aug. about the risk of kidnapping in Caribbean country. (Photo by Joseph Odelyn/AP Photo)

Undated BBC handout photo of a female two-coloured Mason Bee carrying a dried grass stalk back to her snail-shell nest on the British Isles in the latest episode of Sir David Attenborough's Wild Isles series. Issue date: Sunday March 26, 2023. (Photo by John Walters/Silverback Films/BBC/PA Wire)

This aerial photograph taken on April 22, 2024 shows a flooded island after heavy rains in Qingyuan, in southern China's Guangdong province. More than 100,000 people have been evacuated due to heavy rain and fatal floods in southern China, with the government issuing its highest-level rainstorm warning for the affected area on April 23. (Photo by AFP Photo/China Stringer Network)

Members of the NYPD detain protesters from the pro-Palestinian protest encampment and Hamilton Hall where demonstrators barricaded themselves inside on April 30, 2024 in New York City. Police arrested nearly 100 people as they cleared the university of demonstrators who were issued a notice to disband their encampment after negotiations failed to come to a resolution. University President Minouche Shafik has requested the NYPD maintain a presence on campus through at least May 17.(Photo by Stephanie Keith/Getty Images)