Police detain demonstrators during an action against Russia's attack on Ukraine in St. Petersburg, Russia, Monday, February 28, 2022. Protests against the Russian invasion of Ukraine resumed on Monday, with people taking to the streets of Moscow and St. Petersburg and other Russian towns despite mass arrests. (Photo by Dmitri Lovetsky/AP Photo)

France's Juliette Ducordeau (Front R) and fellow athletes react after crossing the finish line of the Women's Mass Start 10 km Free event at the FIS Tour de Ski stage on January 8, 2023 in Val di Fiemme. (Photo by Marco Bertorello/AFP Photo)

Shadow art is a unique form of sculptural art where the 2D shadows cast by a 3D sculpture are essential for the artistic effect.

An image of the popular video game “Angry Birds” is displayed on an iPod Touch on March 18, 2011 in San Anselmo, California. The “Angry Birds” mobile device video game developer Rovio is begnning the process of seeking an initial public offering (IPO). (Photo Illustration by Justin Sullivan/Getty Images)

Facebook CEO Mark Zuckerberg (L) watches a demonstration of the new Facebook video chat during a news conference at Facebook headquarters July 6, 2011 in Palo Alto, California. Zuckerberg announced new features that are coming to Facebook including video chat and a group chat feature. (Photo by Justin Sullivan/Getty Images)

In this image released on November 2, model Alva Claire is seen during Rihanna's Savage X Fenty Show Vol. 4 presented by Prime Video in Simi Valley, California; and broadcast on November 9, 2022. (Photo by Kevin Mazur/Getty Images for Rihanna's Savage X Fenty Show Vol. 4 presented by Prime Video)

North Koreans perform during the “Arirang” Mass Games at the May Day Stadium in Pyongyang, as part of celebrations ahead of the 60th anniversary marking the end of the 1950-53 Korean War, in this photo taken by Kyodo July 22, 2013. (Photo by KYODO)