Children play in the Crown Fountain at Millennium Park in Chicago, Wednesday, June 29, 2022. (Photo by Nam Y. Huh/AP Photo)

Palestinian children practise parkour along a beach in Gaza City at sunset on January 27, 2021. (Photo by Mohammed Abed/AFP Photo)

Children play on a flooded street after heavy rain in Minsk, Belarus July 13, 2016. (Photo by Vasily Fedosenko/Reuters)

Children play in front of a brick factory on the outskirts of the northern Myanmar city of Mandalay on December 14, 2015. (Photo by Phyo Hein Kyaw/AFP Photo)

Children of Indian laborers play on make-shift swings in Amritsar, India, May 12, 2015. (Photo by Narinder Nanu/AFP Photo)

Children feed a giraffe at Pairi Daiza wildlife park, a zoo and botanical garden in Brugelette, Belgium, May 25, 2015. (Photo by Francois Lenoir/Reuters)

Japan's electronics equipment maker MuRata Manufacturing Co., Ltd's showcased their bicycle-riding robot “MuRata Boy” during the CEATEC Japan 2006 exhibition on October 3, 2006 in Chiba, Japan. The “MuRata Boy” robot can ride up a 25-degree slope, stop without losing its balance and make an S-curve without falling. (Photo by Koichi Kamoshida/Getty Images)