Nursery plants are seen placed in people's seats during a rehearsal as Barcelona's Gran Teatre del Liceu opera reopens its doors with a concert for plants, to raise awareness about the importance of an audience after the coronavirus lockdown, in Barcelona, Spain on June 22, 2020. The Gran Teatre del Liceu reopens its doors, in which the 2,292 seats of the auditorium will be occupied on this occasion by plants. It will be on 22 June, broadcast live online, when the UceLi Quartet string quartet performs Puccini's “Crisantemi” for this verdant public, brought in from local nurseries. (Photo by Nacho Doce/Reuters)

TVs display a reaction of Japan's Uta Abe, the gold medallist of the judo women's -52kg during the Tokyo 2020 Olympic Games, to celebrate the victory of her brother Hifumi Abe as he wins the judo men's -66kg final at an electronics retail shop in Tokyo on July 25, 2021. (Photo by Yasuyoshi Chiba/AFP Photo)

A Palestinian man plays with a horse at the beach of the Mediterranean Sea in Gaza City in the northern Gaza Strip, Friday October 1, 2021. The beach is one of the few open public spaces in this densely populated city. (Photo by Hatem Moussa/AP Photo)

Afghan children play at a brick-making factory on the outskirts of Jalalabad city, eastern Afghanistan on November 13, 2019. (Photo by Reuters/Parwiz)

Indian bride takes part in a mass marriage ceremony under chief minister's welfare scheme (Mukhyamantri Kanyadan Yojna) on the occasion of the Basant Panchami festival, in Bhopal, India, 30 January 2020. (Photo by Sanjeev Gupta/EPA/EFE/Rex Features/Shutterstock)

Meanwhile, over on Portobello beach, members of the Upsala circus take a stroll before their fringe debut, Ping-Pong Ball Effect in Edinburgh, England on August 1, 2017. (Photo by Murdo Macleod/The Guardian)

Arctic wolves in their new enclosure in the wildlife park in Hanau, Germany, 10 February 2015. The pack is one of the park's main attractions, which specializes in local and European breeds. (Photo by Boris Roessler/EPA)

Naturally, it is important that a baby learn the right habits. This woman demonstrates that smoking is wrong for babies. From a series of images parodying women's lifestyle and beauty magazines. (Photo by Jacobsen/Getty Images). 1955