Students attend a stewardess skill training for the upcoming 2017 entrance examination for art majors in colleges in Luoyang, central China's Henan Province, January 4, 2017. Along with how to stand, how to sit is also covered in these classes. (Photo by Li Bo/Xinhua/Barcroft Images)

(L-R) Models Kylie Jenner and Kendall Jenner pose during the Universal, NBC, Focus Features, E! Entertainment Golden Globes After Party Sponsored by Chrysler held at the Beverly Hilton Hotel on January 8, 2017. (Photo by Christopher Polk/NBC/NBCU Photo Bank via Getty Images)

1974: American boxer Muhammad Ali, formerly Cassius Clay, strikes an aggressive pose at a press conference on November 29, 1974. (Photo by Harry Dempster/Express/Getty Images); American actor Will Smith at the Royal Premiere of the film Ali in London on December 11, 2001. Smith starred as Muhammad Ali in the film. (Photo by Dave Hogan/Getty Images)

“LSD Photo Advertising Studio is comprised of Marco and Paolo. They are photographers who compose, shoot and post-produce all of their images together. For over ten years, they have been creating images from start to finish. Marco and Paolo have different backgrounds of experience: Paolo started as an illustrator then a photographer, and now he’s at Marco’s side and in his head throughout shooting. In turn, Paolo does all the post-production with Marco in his head and at his side. Marco has always worked as photographer”. – Tim Mitchell

Women wearing prosthetic legs participate in a public photo session at the Hasselblad and Profoto booth, during the CP+ camera and imaging equipment trade fair in Yokohama south of Tokyo, February 14, 2015. Japanese prosthetist Fumio Usui inspired the event after collaborating with photographer Takao Ochi in the book project “Amputee Venus” that portrays 11 Japanese women with artificial legs, local media reported. (Photo by Thomas Peter/Reuters)

A handful of villages in the U.K. share the same name as cities or countries from around the world, and they’re spending life in the shadows of their more famous namesakes. Photo: A road sign points the way on August 6, 2013 in Toronto, England. Originally called Newton Cap in the county of Durham, built for workers at the nearby colliery, owner Henry Stobart re-named the village Toronto after visiting Canada. (Photo by Peter Macdiarmid/Getty Images)

People protest for greater action against climate change during the People's Climate March on September 21, 2014 in New York City. The march, which calls for drastic political and economic changes to slow global warming, has been organized by a coalition of unions, activists, politicians and scientists. (Photo by Andrew Burton/Getty Images)

Members of staff demonstrate a form of massage using pythons at Bali Heritage Reflexology and Spa on October 27, 2013 in Jakarta, Indonesia. The snake spa offers a unique massage treatment which involves having several pythons placed on the customers body. The movement of the snakes and the adrenaline triggered by fear is said to have a positive impact on the customers metabolism. (Photo by Ulet Ifansasti/Getty Images)