Models prepare backstage before a presentation as part of Fashion Weekend Plus Size Summer 2015 collection show in Sao Paulo, July 25, 2015. (Photo by Nacho Doce/Reuters)

Comandos de Salvamento rescuers Maria Martinez (L) and Ana Chichilla attend to a wounded homeless man in San Salvador, El Salvador July 16, 2016. The man was attacked with a machete by suspected gang members. In 2015, El Salvador registered a record 103 homicides per 100,000 habitants, making it one of the most dangerous countries in the world outside a war zone. But for many young people who have few chances to distance themselves from rivalries between so-called maras in their schools and neighbourhoods, a civil-society organisation called the Comandos de Salvamento, or Rescue Corps, has been a refuge. (Photo by Jose Cabezas/Reuters)

Workers lay railway track in a tunnel of the Crossrail project in Stepney, east London, Britain, November 16, 2016. Crossrail, which is Europe's largest construction project, is a railway link which will connect outlying areas to the east and west of London with tunnels under the centre of the capital. (Photo by Stefan Wermuth/Reuters)

A “creuseur”, or digger, a plastic lantern on his head, readies to enter a copper and cobalt mine in Kawama, Democratic Republic of Congo on June 8, 2016. Cobalt is used in the batteries for electric cars and mobile phones. Working conditions are dangerous, often with no safety equipment or structural support for the tunnels. The diggers say they are paid on average US$2-3/day. (Photo by Michael Robinson Chavez/The Washington Post)

Fisherman transport sharks to the fish market in the traditional fishing port in Banda Aceh, Indonesia, 26 August 2020. According to media reports, the marine and fisheries sector is considered as one of the affected by the coronavirus pandemic, affecting more than 3.5 million fishermen and all sectors working throughout the supply chain. (Photo by Hotli Simanjuntak/EPA/EFE)

Jordan Spence and Dawson Stallworth watch waves come ashore as Hurricane Sally approaches in Orange Beach, Alabama, U.S., September 15, 2020. (Photo by Jonathan Bachman/Reuters)

Incredible drone image capture colourful water lilies being harvested in An Giang Province, Vietnam, Southeast Asia on September 2020. Water lilies are an iconic symbol in the Mekong Delta and the flowers are immediately sent to market before landing on meal tables. Their stalks are edible and can be eaten raw with either fermented paste or braised sauce, or dunked into sour soup or hotpot. (Photo by Nguyen Sanh Quoc Huy/Triangle News)

Kindergartner Cameron McManus, 5, watches as a fellow student has his portrait made during “picture day” at Rogers International School on September 23, 2020 in Stamford, Connecticut. Students lined up outside to be photographed while socially distanced due to COVID-19 precautions. Most students at Stamford Public Schools are taking part in a hybrid education model, attending in-school classes every other day and distance learning the rest. (Photo by John Moore/Getty Images)