Barrier tape is tied around 15-month-old Shivani's ankle to prevent her from running away, while her mother Sarta Kalara works at a construction site nearby, in Ahmedabad, India, April 19, 2016. Kalara says she has no option but to tether her daughter Shivani to a stone despite her crying, while she and her husband work for 250 rupees ($3.8) each a shift digging holes for electricity cables in the city of Ahmedabad. There are about 40 million construction workers in India, at least one in five of them women, and the majority poor migrants who shift from site to site, building infrastructure for India's booming cities. Across the country it is not uncommon to see young children rolling in the sand and mud as their parents carry bricks or dig for new roads or luxury houses. (Photo by Amit Dave/Reuters)

Vehicles pass through the heavy fog and air pollution that cover Skopje valley in the early morning, in Skopje, The Former Yugoslav Republic of Macedonia, 14 December 2017. According to media reports, Skopje is considered one of the most polluted cities in the world. (Photo by Georgi Licovski/EPA/EFE)

A tourist takes photos among fireweed, or kochia scoparia, at an archaeological site park on September 13, 2022 in Xi'an, Shaanxi Province of China. (Photo by Zhang Yuan/China News Service via Getty Images)

An aerial view of rock salt collection pool made of tarpaulin, where rock salt is obtained by collecting the natural spring water in the mountains and evaporating the water, in Kozluk District of Batman, Turkiye on August 22, 2022. The production of rock salt, passed down from generation to generation, became the sole source of income for 45 households in the village of Derince, with a population of about 400 of Batman. (Photo by Omer Yasin Ergin/Anadolu Agency via Getty Images)

Winning connections from the owners and stable staff celebrate the victory of Harry Skelton riding Langer Dan to victory in The Coral Cup Handicap Hurdle during day two of the Cheltenham Festival 2023 at Cheltenham Racecourse on March 15, 2023 in Cheltenham, England. (Photo by Alan Crowhurst/Getty Images)

Disguised revellers parade on the occasion of the Cortege during the Carnival in Basel, Switzerland, February 17, 2016. (Photo by Georgios Kefalas/EPA)

A participant poses with his laptop during the 33rd Chaos Communication Congress on its opening day on December 27, 2016 in Hamburg, Germany. The annual event is bringing together 12,000 computer hackers and activists who will meet over the next four days to share expertise and discuss topics related to the society and the digital world. (Photo by Morris MacMatzen/Getty Images)