A diving competitor during a practice session at Tokyo Aquatics Centre ahead of the Tokyo 2020 Olympic Games in Japan on Wednesday, July 21, 2021. (Photo by Stefan Wermuth/Reuters)

Speed Team’s Joan Font and co-driver Themis Lopez attempt to retrieve their vehicle after it was stuck in water during stage 9 of Dakar Rally in Saudi Arabia on January 10, 2023. (Photo by Hamad I Mohammed/Reuters)

Ice swimmer Klaudia prepares to swim in a filled up water kettle in an ice cave inside the Nature Ice Palace, with a hight of 3,250 meters (10,663 feet) above sea level, at Hintertux Glacier near Hintertux, some 480 kilometers (298 miles) western of Vienna, Austria, 28 July 2018. (Photo by Christian Bruna/EPA/EFE)

A festivalgoer enjoys the weather in the circus area at the Glastonbury Festival at Worthy Farm in Somerset, United Kingdom on Thursday, June 22, 2023. (Photo by Ben Birchall/PA Images via Getty Images)

A woman visits the mirror installation “Mar de Espelhos” (Sea of Mirrors) ahead of its opening in Rio de Janeiro, Brazil on June 13, 2023. (Photo by Ricardo Moraes/Reuters)

Fighters Feather “The Hammer” Hadden (L) and Allie “Babydoll” Parks compete during “Lingerie Fighting Championships 21: Naughty 'n Nice” at the Robinson Rancheria Resort & Casino on June 18, 2016 in Nice, California. Hadden won the bout. (Photo by Ethan Miller/Getty Images for LFC)

A monkey chews on a brazillian tourist's hair at the Pra Prang Sam Yod temple during the Lopburi Monkey Festival on November 28, 2021 in Lop Buri, Thailand. Lopburi holds its annual Monkey Festival where local citizens and tourists gather to provide a banquet to the thousands of long-tailed macaques that live in central Lopburi. (Photo by Lauren DeCicca/Getty Images)

The Greenland ice sheet is a vast body of ice covering 660,235 sq miles, roughly 80% of the surface of Greenland. It is the second largest ice body in the world, after the Antarctic Ice Sheet. Some scientists predict that climate change may be near a "tipping point" where the entire ice sheet will melt in about 2000 years. If the entire 2,850,000 cubic kilometres (683,751 cu mi) of ice were to melt, it would lead to a global sea level rise of 7.2 m (23.6 ft).