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)

Ngorongoro Crater (Tanzania). At 610m deep and 260 sq km, this is the largest unflooded caldera in the world. A blue-green vision from above it's a haven for engangered wildlife and Maasai livestock. The crater was formed three million years ago when a giant volcano, which could have been as high as Kilimanjaro, exploded and collapsed. The caldera formed the concentric fractures in the crust cracked down to a magma reservoir deep underground. (Photo by John Bryant/Getty Images)

Commonwealth dance group on the right track with Virgin Trains – Photo call at Glasgow Central Station. (Photo by Daily Record)

People work with cocoa beans in Enchi June 17, 2014. Picture taken June 17, 2014. Ghana emerged as a success story during the 2000s, when war, political instability and a disastrous liberalization brought Ivory Coast's cocoa sector to its knees. Ghana's output more than tripled from 340,000 tons in the 2001/02 season to a record 1,025,000 tons a decade later. Strict controls cemented its reputation as a producer of top quality beans, establishing a brand that fetches a premium. (Photo by Thierry Gouegnon/Reuters)

A person looks at Australian artist Ron Muecks large-scale installation “Mass” which comprises more than 100 hand-cast skulls that collectively weigh approximately 5000 kilograms at an exhibition at the National Gallery of Victoria (NGV) in Melbourne on May 18, 2022. (Photo by William West/AFP Photo)

Piccacho, Pokemon passes the Hero toys and is guided into the goods lift in London, United Kingdom on January 24, 2023. (Photo by Guy Bell/Alamy Live News)

Members of the Hitler Youth who are trained to report airstrikes repaining their bicycles. Published by: “Die Sirene”. 1942. (Photo by Herbert Hoffmann/Ullstein Bild via Getty Images)

Seven-year-old Ruby Macis explores the stunning sunflower field at Balgone Estate, East Lothian, UK on August 6 2024, which prepares to open to the public for the second year this week with quarter of a million sunflowers over seven acres. (Photo by South West News Service)