Young people fight for fun with their pillows, during the International Pillow Fight Day at the Place des Grottes, in Geneva, Switzerland, Saturday, April 4, 2015. The annual International Pillow Fight Day takes place in hundreds of cities around the world. (Photo by Salvatore Di Nolfi/AP Photo/Keystone)

Young Japanese women pose with a green bear costumed person during the 'Earth Parade 2015' in Tokyo, Japan, Saturday, November 28, 2015. Ahead of the U.N. climate change summit in Paris starting this week, about 1,000 citizens and environmental activists took to the streets of Tokyo on Saturday, calling for strong actions to combat global warming. (Photo by Franck Robichon/EPA)

(L-R) Young Paris, Lionel Richie, Isabela Moner and Austin Butler attend the Jeremy Scott Fashion Show during New York Fashion Week at Spring Studios on September 8, 2017 in New York City. (Photo by Ben Gabbe/Getty Images)

For the Torajan people of Indonesia, death is part of a spiritual journey: families keep the mummified remains of their deceased relatives in their homes for years – and traditionally invite them to join for lunch on a daily basis – before they are eventually buried. Here: Todeng died in 2009. A young relative of his, Sam, lights him a cigarette and changes his glasses. (Photo by Claudio Sieber Photography/The Guardian)

Kim Tae-yeon holds a national flag while waiting for a parade to celebrate the country's National Foundation Day in Seoul, South Korea, Thursday, October 3, 2024. (Photo by Ahn Young-joon/AP Photo)

Young gorillas monkey around with zoo visitors, sticking their tongues out and pressing their faces against the glass, February 2025. Mobi, 1, and Gaia, 10 months, are half sisters and often push each other away at the glass to get the attention of their observers at the Prague Zoo. (Photo by Lucie Stepnickova/Solent News & Photo Agency)

Young Muslim worshippers stand in the rain at the shrine of the 12th-century Sunni cleric Abdul Qadir al-Jilani (Gilani) in Baghdad as people gather to perform the prayers for Eid al-Fitr, which marks the end of the Muslim holy fasting month of Ramadan, as observed locally on March 31, 2025. (Photo by Ahmad Al-Rubaye/AFP Photo)