People take a selfie as the sun sets over Manhattan aligned exactly with the streets in a phenomenon known as “Manhattanhenge”, in New York City, U.S., July 11, 2016. (Photo by Mark Kauzlarich/Reuters)

Paramilitary policemen carry tyres as they take part in a training session in Zhangye, Gansu Province, China, March 1, 2016. (Photo by Reuters/Stringer)

Members of a propaganda troupe perform in a public square in Pyongyang on April 12, 2017. (Photo by Ed Jones/AFP Photo)

A tale of two foxes. Surprising behaviour, witnessed in Wapusk national park, on Hudson Bay, Canada, in early winter. Red foxes don’t actively hunt Arctic foxes, but where the ranges of two predators overlap, there can be conflict. Though the light was poor, the snow-covered tundra provided the backdrop for the moment that the red fox paused with the smaller fox in its mouth in a grim pose. (Photo by Don Gutoski/2015 Wildlife Photographer of the Year)

Women take pictures between stone sculptures of half-buried people at the Lapindo mud field in Sidoarjo, October 11, 2015. Disaster tourism has become more common in Indonesia, where visitors are drawn to sites of earthquakes, floods and volcanic eruptions to witness the aftermath of catastrophes or simply do some soul-searching. (Photo by Reuters/Beawiharta)

A truck carrying iron ore moves along a road at the Fortescue Metals Group (FMG) Christmas Creek iron ore mine located south of Port Hedland in the Pilbara region of Western Australia, November 17, 2015. (Photo by Jim Regan/Reuters)

Miners search for jade stones at a mine dump at a Hpakant jade mine in Kachin state, Myanmar November 25, 2015. (Photo by Soe Zeya Tun/Reuters)

A rescue worker holds an injured boy after what activists said were airstrikes carried out by the Russian air force in Idlib city, Syria December 20, 2015. (Photo by Ammar Abdullah/Reuters)