Group leader Jane Waithageni Kimaru, 60 years old, shows women how to fight off a potential rapist and escape, during a Taekwondo self-defense class for women in the Korogocho slum of Nairobi, Kenya, Thursday, September 16, 2021. (Photo by Brian Inganga/AP Photo)

Four-man bicycle is powered by five chains and has brakes on both its wheels, 1948. The bike was built by Art Rothschild (top position) who broke three ribs while learning how to ride it. (Photo by Wallace Kirkland/Time & Life Pictures)

A model has her hair done backstage before a fashion show by Greek designer Mary Katrantzou during the Mercedes-Benz China Fashion Week in Beijing, China, 27 March 2016. The fashion week runs until 31 March. (Photo by How Hwee Young/EPA)

“7584 Fish”. On a windy day right after a Cyclone passed the far northern Great Barrier Reef i took some friends out to the reef. Never before i saw that many glass fish on this particular coral “bommie”. Just when i setup my camera, this Napoleon Wrasse swam right through the school of fish building a living frame. Photo location: Cairns, Great Barrier Reef, Flynn Reef, Australia. (Photo and caption by Christian Miller/National Geographic Photo Contest)

This close-up image – of a Holi Festival celebrant in Vrindivan, India, coated in neon-colored powder – was submitted to National Geographic’s Your Shot in the last week of March. On April 1 we published it on our Daily News site, along with seven other bright scenes captured during the Hindu spring Festival of Colors. (Photo by Tinto Alencherry/National Geographic)

You rarely get the opportunity to get up close and personal with a tiny insect. Indonesian photographer Nordin Seruyan helps us to look past the creepy-crawlies of insects and focus on their delicate beauty. In brilliant color and sharp focus, Seruyan captures the insects in his garden. From butterflies and mantises to beetles and snails, the creatures of Southeast Asian get your full focus. (Photo by Nordin Seruyan)

Pixel – the cat about to enter the record books as the world's shortest feline. Standing at just five inches from shoulder to paw this compact cat could break the previous record held by her mother Fizz Girl in 2012, who stood at six inches.

Marcelo Maragni was born in Sao Paulo, Brazil. According to his mother’s idea, he was ment to be an architect in a quest of changing the world. Instead, he preferred to take possession of his father’s camera and learn another craft on his own.