“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)

Nova Scotia Duck Tolling retriever Torrey competes in the 10th annual Petco Unleashed surfing dog contest at Imperial Beach, California August 1, 2015. Proceeds raised at the event go to benefit the San Diego Humane Society. (Photo by Mike Blake/Reuters)

A humanoid dental patient robot, named Hanako Showa, about to be used during a demonstration of dental treatment at Showa University on March 25, 2010 in Tokyo, Japan. The robot was co-developed by the university and tmsuk co. Ltd, and simulates real human patients. The robot has been used for training of procedures in which the dental treatment requires a high level of precision. (Photo by Koichi Kamoshida/Getty Images)

Photographer Tyler Shields had become comfortable, a feeling he found “terrible” as an artist. He wanted to do something challenging, something that pushed the human boundaries. So he spent a year documenting heights, fear, energy and falling – a series he calls “Suspense”. Photo: “Balloon”. (Photo by Tyler Shields)

Sabine Pearlman‘s photographs find beauty in the destructive engineering of ammunition with this series of cross-sections of bullets cartridges from a Swiss bunker. They reveal the complexity inside each case. This series, which consists of 900 specimens, was photographed inside a WWII bunker in Switzerland. Pearlman says that she is intrigued by the beautiful complexity of the ammo set against its destructive purpose, at once showing off humanity’s ability to create and destroy.

Kacper Kowalski was born in 1977. With a degree in architecture, he focuses on aerial photography. Both a pilot and a photographer, he has unique control over each shot. As a result he captures previously unseen natural environments and ordinarily inaccessible cityscapes. In this way unreal, almost graphic pictures come into being. They show patterns, symmetries and asymmetries created by humans and the nature.

This is one boy's amazing picture diary of his pet rodents doing very human tasks. Colin Mclaughlin, from Maryland, USA, has created a hilarious photo collection of his pet guinea pigs, Chester and Sam. (Photo by Colin Mclaughlin/Caters News)