Students from St Andrews University are covered in foam as they take part in the traditional Raisin Weekend in the Lower College Lawn, at St Andrews in Scotland on October 22, 2018. The “raisin weekend” stems from a gift of raisins (now flour and foam) traditionally given by a first year student to their academic “parents” in gratitude for their guidance. (Photo by Russell Cheyne/Reuters)

Jordan Mann (R) falls into the water as he and Jordan Cross compete in the first round of Men's 3000 Meters Steeplechase during day four of the 2020 U.S. Olympic Track & Field Team Trials at Hayward Field on June 21, 2021 in Eugene, Oregon. (Photo by Patrick Smith/Getty Images)

Caio Souza of Team Brazil competes on vault during Men's Qualification on day one of the Tokyo 2020 Olympic Games at Ariake Gymnastics Centre on July 24, 2021 in Tokyo, Japan. (Photo by Mike Blake/Reuters)

One happy reveller smiled and gave a thumbs up to the camera in Newcastle, United Kingdom after receiving their A Level results on Tuesday, August 10, 2021. Students hit the town across the country, downing cocktails and letting their hair down after two years of studying during the pandemic. (Photo by Newcastle New Projects)

Third place: the rear leg, claw and respiratory trachea of a louse (Haematopinus suis). (Photo by Frank Reiser/Nassau Community College/Nikon Small World Photomicrography 2021)

A hiker admires the view as Mt. Etna, Europe's largest active volcano, erupts in the background, in the Bove Valley of Etna Park, on the eastern slope of Mt. Etna, in Sicily, southern Italy, Sunday, July 4, 2021. Since Feb. 16, 2021, Mt. Etna has begun a series of eruptive episodes. (Photo by Salvatore Allegra/AP Photo)

Ukraine's Viktoriia Onopriienko competes in the individual all-around qualification round during the Rhythmic Gymnastics World Championships at the West Japan General Exhibition Center in Kitakyushu, Fukuoka prefecture on October 27, 2021. (Photo by Charly Triballeau/AFP Photo)

Japan's Naomi Osaka sits with her towel over her head during a break in her third round loss to Coco Gauff of the U.S. at the Australian Open tennis championship in Melbourne, Australia, Friday, January 24, 2020. (Photo by Lee Jin-man/AP Photo)