Children playing on Walled City rooftop in Hong Kong, 1989. The lack of formal governance in the Walled City led to challenges, but it also fostered a unique system of informal social order. (Photo by Greg Girard/The Guardian)

Oil pools in a leaf on the beach following an oil slick at Tanjong Beach in Sentosa, Singapore on June 15, 2024. (Photo by Edgar Su/Reuters)

Models wait backstage before the opening show for China Fashion Week, featuring Finnish outdoor gear brand Halti, in Beijing, Thursday, March 20, 2025. (Photo by Ng Han Guan/AP Photo)

The clear blue water off Sidmouth in Devon, UK in March 2025 turned an orangey-red hue as tonnes of 200 million-year-old sandstone was mixed in by the tide. The 500ft cliff suffered a massive fall in October last year, and took a large section of Otter sandstone and Mercia mudstone with it. (Phoot by Dean Penn/RedZepplin/Bournemouth News)

A soldier makes a “heart hands” gesture from inside a tank during the parade in Washington on June 14, 2025. (Photo by Kevin Mohatt/Reuters)

A tiger enjoys frozen food at Rome Zoological Garden “Bioparco” during a heat wave in Rome on July 2, 2025. (Photo by Tiziana Fabi/AFP Photo)

A pupil arrives on the first day of school at Yas American Academy in Abu Dhabi in the last decade of August 2025. (Photo by Victor Besa/The National)

A model holds a dog presenting a creation by Anthony Rubio during New York Fashion Week, in New York City, U.S., September 13, 2025. (Photo by Caitlin Ochs/Reuters)