A tourist walks inside the Ice Palace glacier hollow at Hintertux glacier, located at around 3250 meters above sea level, in Zillertal, Austria, 02 March, 2016. The hollow's temperature remains constant at 0 degrees Celsius, in summer and winter alike, and is also used by the University of Innsbruck for scientific research projects. (Photo by Lisi Niesner/EPA)

This picture taken on July 8, 2015 shows 13-year-old jockey Purevsurengiin Togtokhsuren (R) watching a horse rolling in the dirt after a training session in Khui Doloon Khudag, some 50 kms west of Ulan Bator. Despite being only 13 years old, Togtokhsuren is riding for the fifth time in the national races for Mongolia's summer festival, known as Naadam, lining up against some 170 other child jockeys. (Photo by Johannes Eisele/AFP Photo)

Bosnian worker Sefik Salihovic drives a steam engine in the Bosnian town of Banovici, 140 kms (86.9 miles) north of Sarajevo, on Monday, November 24, 2014. Every day, steam engines over 60 years old, defy their age and still pull wagons of coal from Banovici's coal mine to clients in nearby towns. But in the summer some of them turn into the only tourist attraction this impoverished north Bosnian town has to offer. (Photo by Amel Emric/AP Photo)

Nobby the polar bear cools down as he plays in a lake at the Yorkshire Wildlife Park in Doncaster, England, Friday June 17, 2022. A blanket of hot air stretching from the Mediterranean to the North Sea is giving much of western Europe its first heat wave of the summer, with temperatures forecast to top 30 degrees Celsius (86 degrees Fahrenheit) from Malaga to London on Friday. (Photo by Danny Lawson/PA Wire via AP Photo)

American supermodel Bella Hadid sets pulses racing as she showcases a new range of bras by Victoria's Secret in February 2023. The 26-year-old model appears alongside several other catwalk beauties in the “Bras, That's Our Thing” campaign for the brand. Paloma Elsesser, Adut Akech and Taylor Hill also appear, as do Candice Huffine, Mayowa Nicholas, and Valentina Sampaio. (Photo by Camilla Summers-Valli/Victoria's Secret/The Mega Agency)

A Kashmiri farmer picks saffron flowers from a field in Pampore, south of Srinagar, the summer capital of Indian Kashmir, 06 November 2023. Pampore, also known as the Saffron town of Kashmir, is famous for its high quality saffron. It is one of few places in the world where the world's most expensive spice grows. (Photo by Farooq Khan/EPA)

Slovenia’s Janja Garnbret climbs during a training session in Verd, some 20 km southwest of Ljubljana, on March 27, 2024. The eight-time world champion is looking to win another gold medal at the Paris 2024 Olympics Games this summer, just like she did in Tokyo 2020 when the sport debuted at the Olympics. (Photo by Jure Makovec/AFP Photo)

A woman eats an ice cream as people sunbathe on the beach in Barcelona, Spain, Friday, January 26, 2024. Spain's weather agency says recent abnormally high temperatures for this time of year are set to continue in many parts of Spain on Friday and over the weekend, with an almost summer-like feeling in many coastal areas as people take to the beaches to sunbathe and some to have a winter swim. (Photo by Emilio Morenatti/AP Photo)