Dr. Hannah Cobb from The University of Manchester looks at a viking sword during a viewing at CFA Archaeology of artefacts discovered from the first fully intact Viking boat burial site on October 18, 2011 in Edinburgh, Scotland. (Photo by Jeff J Mitchell/Getty Images)

A British soldier from 3 Commando Brigade looks through the sight of his sniper rifle at Camp Gibraltar February 24, 2003 near Kuwait City, Kuwait. (Photo by Ian Waldie/Getty Images)

A model presents a creation from the fashion label Kakopieros during Australian Fashion week in Sydney, Australia, May 20, 2016. (Photo by David Gray/Reuters)

An Afghan Sikh man drinks from a cup inside a Gurudwara, or a Sikh temple, during a religious ceremony in Kabul, Afghanistan June 8, 2016. (Photo by Mohammad Ismail/Reuters)

A model poses with her bodypainting designed by bodypainting artist Arianna Barlini from Italy, in the 2016 World Bodypainting Festival, 2016 in Poertschach am Woerthersee, Austria. (Photo by Didier Messens/Getty Images)

A man wearing a Pikachu hat, a character from Pokemon, plays Pokemon Go during a gathering to celebrate “Pokemon Day” in Mexico City, Mexico August 21, 2016. (Photo by Carlos Jasso/Reuters)

A man sits in the back of a taxi with a goat after purchasing it from a livestock market ahead of the Eid al-Adha festival in Kolkata, India, September 8, 2016. (Photo by Rupak De Chowdhuri/Reuters)

Budgies feed on seeds from a local visitor's hands at Ocean Park in metro Manila, Philippines September 10, 2016. (Photo by Romeo Ranoco/Reuters)