Photographer Gregg Segal travelled the world to document children and the food they eat in a week. Partly inspired by the increasing problems of childhood obesity, he tracked traditional regional diets as yet unaffected by globalisation, and ironically, found that the healthiest diets were often eaten by the least well off. (Photo by Gregg Segal/The Guardian)

Aoife Ni Heochaidh enjoys the sunrise as she welcomes winter solstice at the 5000-year-old stone age passage tomb of Newgrange in the Boyne Valley, as entry inside the chamber is closed for the second year due to coronavirus disease (COVID-19) pandemic, in Newgrange, Ireland, December 21, 2021. (Photo by Clodagh Kilcoyne/Reuters)

A Tamil devotee prays during the Thai Pongal harvest festival at a temple in Colombo January 15, 2016.The Tamil festival of Thai Pongal is a thanksgiving ceremony in which the farmers thank the spirits of nature, the sun and the farm animals for their assistance in providing a successful harvest. (Photo by Dinuka Liyanawatte/Reuters)

The drag artist Wet Mess performs Testo – a show about testosterone – at the Here & Now Showcase, Edinburgh international festival fringe in 2024. (Photo by Murdo MacLeod/The Guardian)

A Santa hangs down the facade of the Hospital Germans Trias i Pujol, with the help of the Charity Firemen of Barcelona, as he visits children admitted to the medical center, in Barcelona, Spain, 19 December 2022. (Photo by Alejandro Garcia/EPA/EFE)

Marani Devi Chaudhary (C), aged 40, performs a ritual in front of shaman Paltan Yadav (unseen) at her home in Rajaur village in Dhanusha district, Nepal, 02 November 2017. The shaman identified Marani Devi to be possessed by their lineage god who was dissatisfied by their worship is thought by the family to have caused them misfortune and is even feared lead to their death. (Photo by Narendra Shrestha/EPA/EFE)

Animal rights activists covered with fake blood sit on the floor during a protest against the use of animals in research to mark World Day for Animals in Laboratories in central Madrid April 24, 2014. The sign reads, “How many rabbits do your shampoo kill?”. (Photo by Andrea Comas/Reuters)

Aerial view of sunbeam shining through mountain cave at Yueyan National Forest Park on August 27, 2024 in Yongzhou, Hunan Province of China. (Photo by Jiang Keqing/VCG via Getty Images)