A participant in costume and make-up poses for a photo during a Halloween parade at Walibi park in Wavre, Belgium, October 31, 2018. (Photo by Yves Herman/Reuters)

The first autonomous and electric shuttle of PostAuto Schweiz in the old village of Sion, Switzerland, June 2016. (Photo by Ruben Sprich/Reuters)

Lightning strikes near Jacobsdorf at the Oder-Spree district in eastern Germany, September 1, 2015. (Photo by Patrick Pleul/AFP Photo)

A frosty sunset is seen through icicles in Peremilovo village, 65 km (40,6 miles) north of Moscow, Russia, Sunday, December 16, 2018. Temperatures in the Moscow region on Sunday dropped to –12 degree Celsius (10 Fahrenheit). (Photo by Alexander Zemlianichenko/AP Photo)

Japan's Princess Mako (R) attends the enthronement ceremony where Emperor Naruhito officially proclaimed his ascension to the Chrysanthemum Throne at the Imperial Palace in Tokyo on October 22, 2019. (Photo by Kazuhiro Nogi/Pool/Anadolu Agency via Getty Images)

Muay Thai participants, fight during the Kibra Youth Initiative boxing exhibition at the Kibera Fort Jesus grounds in Nairobi on December 23, 2024. The purpose of the boxing exhibition is to promote boxing and Muay Thai in the local communities and help prevention of crime and substance abuse among the growing youth within the area and surrounding communities. (Photo by Simon Maina/AFP Photo)

Magdalena Vasquez, also known as “Bgirl Mags” (R) and Chris Cielo, also known as “Bboy Cielo” (L) perform during a media call for the Red Bull BC One breakdancing competition at the Brisbane Powerhouse in Brisbane, Australia, 01 July 2025. The world's biggest one-on-one breakdancing competition, the Red Bull BC One have announced Brisbane as the host city for the 2025 Red Bull BC One Cypher Australia. (Photo by Darren England/EPA)

“In anatomy, heterochromia refers to a difference in coloration, usually of the iris (but also of hair or skin). Although infrequently seen in humans, complete heterochromia is more frequently observed in other species, where it almost always involves one blue eye”. – Wikipedia (Photo by StooMathiesen)