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)

A man crosses from a pirogue to another pirogue during the annual boat regatta in Yauri, Kebbi State, on February 15, 2025. The regatta festival started about 200 years ago as a display of naval strength of the Gungu people, where the Gungu warriors annually attacked dangerous hippopotamus that were destroying farmlands. Warriors would board various sizes of canoes with different types of weapons to attack the animal on the River Niger. This required expertise in canoe paddling and naval warfare. It also served as training exercise for upcoming Gungu warriors. (Photo by Toyin Adedokun/AFP Photo)

An employee holds a plant with roots at the Plant Advanced Technologies (PAT) company greenhouse in Laronxe near Nancy, Eastern France, June 19, 2015. The farmers employed at the site in Laronxe are growing plants in a special way with a view to “milking” them for use in medicines, cosmetics and agrochemicals. Several major brands, including Germany's BASF and France's Chanel, have teamed up with Plant Advanced Technologies (PAT) in the hope of securing privileged access to the so-called “biomolecules” it extracts through the use of a patented technique. (Photo by Vincent Kessler/Reuters)

The Enigma coding machine used by the Germans in WWII on display at Bletchley Park National Code Centre, November 25, 2004 in Bletchley, England. (Photo by Ian Waldie/Getty Images)

A demonstrator wears a message on a t-shirt in Tahrir Square on May 27, 2011 in Cairo, Egypt. The ruling Supreme Council of the Armed Forces said that there would be no use of violence against protests dubbed “the Second Revolution of Anger” taking place in Cairo and other cities in Egypt. (Photo by Peter Macdiarmid/Getty Images)

Adam Ghiggio from Australia poses next to mutant mannequins which are lined up to be used as displays for the new video game “Rage” at the Los Angeles Convention Center on June 5, 2011 in Los Angeles, California. The Electronic Entertainment Expo officially starts on Tuesday. (Photo by Kevork Djansezian/Getty Images)