American media personality and socialite Kylie Jenner in the last decade of October 2024 strips off to recreate Demi Moore's famous Striptease scene. (Photo by Greg Swales)

British actress Millie Bobby Brown in the last decade of February 2025 shows off a very 90s denim look. (Photo by miliebobbybrown/Instagram)

“The White Lotus” co-stars Parker Posey (left) and Leslie Bibb reunite at the Gotham TV Awards near Wall Street in NYC on June 2, 2025. (Photo by Zach Hilty/BFA.com/Rex Features/Shutterstock)

Aerial view of workers repairing fishing nets in preparation for a new round of fishing season on July 27, 2025 in Wenling, Taizhou City, Zhejiang Province of China. (Photo by Zhu Haiwei/Zhejiang Daily Press Group/VCG via Getty Images)

Beau Blades poses for photo at Mulletfest 2025 Grand Final at the Chelmsford Hotel on December 06, 2025 in Kurri Kurri, Australia. Hundreds of mullet enthusiasts from across Australia and internationally converged at Chelmsford Hotel in the Hunter Valley for the Mulletfest Grand Final, where competitors vied for the coveted title of “Best Mullet of Them All” across multiple categories ranging from junior to extreme styles. (Photo by George Chan/Getty Images)

Women perform the Chilean protest song about rape culture, “A rapist in your path”, during a protest march marking International Women's Day, in Lima, Peru. Saturday, March 7, 2020. March 8th has been sponsored by the United Nations since 1975 as International Women's Day, celebrating women's achievements and aiming to further their rights. Marches and protests are held across the globe with calls for a more gender-balanced world to mark the day. (Photo by Rodrigo Abd/AP Photo)

A scavenger sifts through garbage piled on the bank of Beirut river, Lebanon August 24, 2015. Lebanese protest organisers called for a fresh demonstration against the government on Saturday after two days of rallies that turned violent in central Beirut and wounded scores of people. The “You Stink” campaign has mobilised against the government's failure to solve a garbage disposal crisis, bringing thousands of people onto the streets in protests that have threatened the survival of the cabinet. (Photo by Mohamed Azakir/Reuters)

Lake Baikal is the world's oldest lake, at 25 million years (possibly older), and deepest, averaging 744.4 metres (2,442 ft).

Located in the south of the Russian region of Siberia, between Irkutsk Oblast to the northwest and the Buryat Republic to the southeast, it is the most voluminous freshwater lake in the world, containing roughly 20% of the world's unfrozen surface fresh water.