The adventurous explorers have snapped themselves in shark-infested waters, at the side of an active volcano, atop a Hong Kong skyscraper surrounded by toxic smog, and even perched on the top of iconic Rio statue of Christ the Redeemer. Here: Ervin Punkar using a selfie stick to take a photo from the very top of the 600ft TV tower in Tartu, Estonia. (Photo by Ervin Punkar/Caters News Agency)

Meet Claire, the 3-year-old bull terrier travels the world with Dutch photographer Alice van Kempen, 48, and poses for photographs in abandoned buildings. Van Kempen seeks out abandoned places to photograph in pursuit of her passion for urban exploring, bringing along her globetrotting pooch as her trusted companion. Here: Claire plaiyng the piano in an abandoned Cafe in Luxembourg. (Photo by Alice van Kempen/Caters News)

A worker stands under the Airlander 10 hybrid airship during its unveiling in Cardington, Britain March 21, 2016. The world's largest aircraft has been unveiled for the first time since being fully assembled in the UK. The 302ft (92m) long Airlander 10 – part plane, part airship – was floated in a First World War hangar in Bedfordshire. (Photo by Darren Staples/Reuters)

“The series of photos called Workwears, by French photographer Bruno Fert, visually juxtaposes people’s private lives with their lives at work. A firefighter, a fisherman, a nurse, a diver, a judge. One by one, Fert’s photos show people in their homes wearing everyday clothing – followed by another photo showing them dressed in the clothing of their chosen professions. Our reaction, Fert said, reminds us how tightly humans hold on to certain stereotypes about some professions. “I like to break those stereotypes”, he said”. – Thom Patterson via CNN. Here: Lola is seen at left in everyday clothes – and then at right in her work clothes. She works as a clown in Paris. (Photo by Bruno Fert/Picturetank)

A model presents a creation from the Juozas Statkevicius Spring-Summer 2018 fashion collection in Vilnius, Lithuania, Thursday, November 9, 2017. (Photo by Mindaugas Kulbis/AP Photo)

Sandrine Kerfante has had a fascination with “doubles” ever since meeting her mother’s twin as a child. In 2012, this lifelong captivation inspired her to create a blog called twin-niwt, which celebrates photographs of doubles in all their forms. “I’m fascinated by the idea of the duo, repetition, symmetry, reflection, mirror games and all the symbolism associated with it”, she says. “I think it’s a topic often present in photography, more or less consciously”. (Photo by Sandrine Kerfante/The Guardian)

A woman cries after a supporter of opposition leader Raila Odinga was killed by police, witnesses said, in Mathare slum in Nairobi, Kenya August 9, 2017. (Photo by Goran Tomasevic/Reuters)