Vietnam’s Son Doong cave, the largest in the world, could hold a 40-story skyscraper inside. The pristine ecosystem has its own river and jungle. Despite its size, Son Doong wasn’t discovered until 1991. It was lost again for nearly two decades and was fully explored for the first time in 2009. (Photo by Jason Speth/HuffPost)

In this image released on November 22, English singer and songwriter Dua Lipa poses for the 2020 American Music Awards, broadcast on November 22, 2020 in London, England. (Photo by Gareth Cattermole/Getty Images for dcp)

A woman holds piles of vegetables transported by motorcycle along a street in Phnom Penh, Cambodia on January 22, 2020. (Photo by Tang Chhin Sothy/AFP Photo)

View of an oil-stained bird on the shore of a contaminated lake in Maracaibo, Venezuela on June 22, 2023. The Azul Ambientalistas foundation denounced on 22 June the “state of emergency” in which the Maracaibo Lake, the largest in Venezuela, finds itself, due to oil spills that, it assured, are affecting the lake economy and the health of the people. (Photo by Henry Chirinos/EPA)

A couple enjoys viewing illuminated autumn leaves with projection mapping at Shinjuku Gyoen National Garden during a preview at the garden in Tokyo, Japan on November 22, 2023. The illumination will start on 22 November through 03 December 2023. (Photo by Kimimasa Mayama/EPA/EFE)

Model Bella Hadid presents a creation by designer Jean Paul Gaultier as part of his Haute Couture Spring/Summer 2020 collection show in Paris, France, January 22, 2020. Picture taken January 22, 2020. (Photo by Charles Platiau/Reuters)

Getting her tongue pierced was “exciting and scary” says a teen who succumbed to pressure from her best friend in Austin, Texas, February 22, 2008. This image is featured in National Geographic's exhibition “Women of Vision: National Geographic Photographers on Assignment”, on view at the Palm Beach Photographic Centre, Jan. 22 - Mar. 22, 2015. (Photo by Kitra Cahana/National Geographic)