FaceResearch.org, a site run by two psychologists at the University of Aberdeen in Scotland, features software that can average together faces from thousands of photos. These images purportedly show the average face of women from 40 different nationalities.

Two dummy tanks being pushed along a road by German soldiers. (Photo by Hulton Archive/Getty Images). Circa 1925

Trained by Dutch photographer Ellen van Deelen to hold different musical instruments and pose for the camera, the Roosendaal Rats are considered very talented by their owner. She confesses rats weren’t exactly her favorite creatures, but, after buying these two, she realized they are highly intelligent creatures.

Canadian painter Rob Gonsalves surrealistic paintings portrays two seemingly different realistic scenes magically merging into one. As a result, the term "Magic Realism" describes his work accurately.

“Two Brothers”. We found about 20 lions eating a buffalo. When the male leaved the group we anticipated him to take photos. It is 8AM, light is perfect and the position too. The lion stops and looks down from the hill, another lion is coming up, it stiffens, I think that will be a fight, i'm tense, the camera is OK, the shots previously made perfect. The two meet, looking directly into their eyes, they sniff, rub against their heads, the tension drops, they start walking with the same step as when they were puppies, they are two brothers. Photo location: Masai Mara, Kenya. (Photo and caption by Massimo Mei/National Geographic Photo Contest)

Workers sort freshly-painted Easter eggs at the Lueck poultry farm on April 7, 2011 in Sommerkahl near Aschaffenburg, Germany. The farm is currently working 24-hour shifts to meet demand for its brightly-coloured eggs two weeks before Easter. (Photo by Ralph Orlowski/Getty Images)

From the waters edge a New York policeman urges two young children to put their bathing costumes back on. (Photo by Ed Clarity/Keystone/Getty Images). July 1949

Two guards perform an execution in China, one holding the gun, the other holding a mask over the victim's face. (Photo by General Photographic Agency/Getty Images). Circa 1925