Revelers stained with colored powder cheer during the Holi festival celebrations in Chennai, India, 08 March 2023. Holi, also known as the “Festival Of Colors” is an ancient Indian Hindu festival symbolizing the victory of good over evil and marking the arrival of spring. It is celebrated with joyful gatherings during which revelers cover each other in colored powders. (Photo by Idrees Mohammed/EPA/EFE)

College students play with coloured powder to celebrate the festival of Holi, near Jantar Mantar in New Delhi on March 7, 2023 (Photo by Press Trust of India)

Women wear the traditional costume of the Alto Tio Diego carnival during the Women's Afro-Mestizo Carnival of Alto Tio Diego on February 11, 2024 in Veracruz, Mexico. Alto Tio Diego is a small town near the State capital Xalapa where every year inhabitants celebrate their traditional carnival. Women of the town demanded a special day for them to parade and few years ago, they started to do it by walking through the streets wearing traditional costumes and masks (mostly of animals) but the attires have evolved to more modern characters. (Photo by Hector AD Quintanar/Getty Images)

Crews paddle fast towards the turning mark during the annual Great Salem Maritime Cardboard Boat Regatta in Salem, Massachusetts on August 9, 2025. (Photo by Joseph Prezioso/Anadolu via Getty Images)

A cave diver in Anhumas Abyss, Bonito, Brazil. (Photo by Marcio Cabral/Epson International Pano Awards 2018)

A boat sails behind a woman looking through binoculars as she sits on a cliff on a sunny day in Sydney, Australia, May 29, 2016. (Photo by David Gray/Reuters)

Wildlife photographer Danté Fenolio has headed into areas untouched by sunlight – deep seas, caves and underground – and found creatures that are exploding with colour. Here: The golden harlequin toad has vanished from the wild, and only a small number live on in captivity. A fungus caused them, and many other amphibians, to die out in their home in Central America. (Photo by Danté Fenolio/The Guardian/Johns Hopkins University Press)

On the western side of Mount Hood lies the longest glacier cave system in the contiguous United States. In 2012, these caves were mapped to a combined length of 7,166.8 feet by cave explorers Brent McGregor and Eddy Cartaya. Currently, the total passage length is hundreds of feet less. Glaciers are frozen rivers; they are always moving and changing... (Photo and caption by Josh Hydeman)