Residents of Mathare slum fill bags with coal in hard conditions in the capital of Kenya, Nairobi on November 06, 2023. The coal that workers produce with primitive methods by working overtime in unlicensed workshops is used for heating, cooking and other daily needs. (Photo by Gerald Anderson/Anadolu via Getty Images)

People wearing protective face masks amid the coronavirus disease (COVID-19) outbreak are seen near foodstuffs, which are displayed for sale on a car in Omsk, Russia on December 4, 2020. (Photo by Alexey Malgavko/Reuters)

Artist Ali Khalifa, center, draws graffiti at his old Kadhimiya district of Baghdad that needed municipal services, Iraq, Wednesday, June 2, 2021. (Photo by Hadi Mizban/AP Photo)

A farmer waits for customers at a wholesale vegetable market in Prayagraj, Uttar Pradesh state, India, Sunday, July 25, 2021. (Photo by Rajesh Kumar Singh/AP Photo)

A pedestrian wearing a face mask to protect against coronavirus, walks in front of a mural, at a metro station in Athens, Greece, Monday, November 15, 2021. Authorities say the rate of death related to COVID-19 in Greece has reached its highest level in six months as roughly one-third of the country's population remains unvaccinated. (Photo by Thanassis Stavrakis/AP Photo)

World's Greatest Swimming Pools: Four Seasons, Serengeti Pool, Tanzania. A show of elephants, buffalo and baboons awaits thanks to an active watering hole below the free-form infinity pool at this plush hideaway inside Serengeti National Park. Bonus: Because of infrared technology at the hole, guests can be notified on their bedroom TV when animals are approaching. When you've got word of wildlife on the horizon, catch them from your private terrace – or head back to the pool. (From $1,650). (Photo by Four Seasons)

In this Monday, July 24, 2017 photo, a police officer walks in front of a mural during a protest demanding an end to the current pension fund system, in Santiago, Chile. Protesters say the government pension system robs retirees of fair pension payments, and are demanding a new social security system with higher payments. (Photo by Esteban Felix/AP Photo)

A dog jumps into water during the “World Dog Show” in Leipzig, Germany, November 10, 2017. Around 31,000 animals are expected at the international pedigree dog competition taking place from 8 to 12 November 2017. (Photo by Hannibal Hanschke/Reuters)