A Tibetan nomad family crowds on a motorcycle at a camp for cordycep pickers on May 21, 2016 near Sershul on the Tibetan Plateau in the Garze Tibetan Autonomous Prefecture of Sichuan province. (Photo by Kevin Frayer/Getty Images)

People take a photograph at the Kremlin, against the backdrop of the Volga river, in the town of Nizhny Novgorod, Russia, July 10, 2015. Russia will host the 2018 FIFA World Cup soccer tournament. (Photo by Maxim Shemetov/Reuters)

A girl dances in front of the digital art installation “Light in Dark” created by teamLab, a collaborative of Japanese digital artists, during a special exhibition of “Shake! Art Exhibition! and Learn and Play! teamLab Future Park” at National Museum of Emerging Science and Innovation (or Miraikan) in Tokyo, Japan, 19 January 2015. The exhibition is held through 01 March 2015. (Photo by Kimimasa Mayama/EPA)

Yaks head towards the Everest base camp in Solukhumbu District April 28, 2014. (Photo by Navesh Chitrakar/Reuters)

Chinese aids activists hand out condoms in a subway train in Wuhan, central China's Hubei province on December 1, 2014. The World Health Organization issued a call to action to China on December 1, 2014 over HIV/AIDS as government figures said nearly half a million people are living with the disease or its precursor, with hundreds of thousands more thought to be undiagnosed. (Photo by AFP Photo)

A model displays a collection called “Chubby Chaser” by Netherlands-based Maison The Faux during New York Fashion Week in New York on September 9, 2016. (Photo by Angela Weiss/AFP Photo)

An animal rights activist, wrapped in packaging labelled “carne humana” (human meat), participates in a protest against meat consumption to promote vegetarianism in central Barcelona, in Spain, May 22, 2016. (Photo by Albert Gea/Reuters)

A student from “the cliff village” in Atule'er climbs newly-constructed steel ladders after school to go home for holidays, in Liangshan Sichuan province, China, November 19, 2016. The steel ladders which replaced the unsafe vine ladders shortened the time taken for the children to go home, from three hours to two. (Photo by Reuters/Stringer)