A line of soldiers firing handguns during a training session, circa 1920. (Photo by Keystone). P.S. All pictures are presented in high resolution.

A boy jumps over a puddle of water on the outskirts of Havana, Cuba March 21, 2016. (Photo by Ueslei Marcelino/Reuters)

A ghost glass frog in the Chocó rainforest, Ecuador in November 2020. The marbled swirling “hypnotising” eyes are thought to be helpful in attracting a mate. (Photo by David Weiller/WENN)

Residents wearing masks rest in the shade near a graffiti of a dragon, Friday, May 27, 2022, in Beijing. (Photo by Ng Han Guan/AP Photo)

A couple poses for wedding photos in front of the Saigon Opera House in Ho Chi Minh City on December 7, 2023. (Photo by Nhac Nguyen/AFP Photo)

A damselfly sits on a leaf at a garden in Nagaon district in the northeastern state of Assam, India, on October 3 , 2023. (Photo by Anuwar Hazarika/NurPhoto/Rex Features/Shutterstock)

A child and any Asiatic Lion look at each other through a glass at Rome's Zoo, Thursday, March 7, 2024. (Photo by Gregorio Borgia/AP Photo)

The Sunda lemur uses a special membrane to “fly” between trees while on the lookout for food in Java, Indonesia in the last decade of June 2024. (Photo by Dzulfikri/Solent News)