A man stands at a passenger train damaged in a collision with a freight train in Moscow region May 20, 2014. The passenger train on its way to Moldova collided with a freight train near Moscow on Tuesday, killing at least four people and injuring 15, a spokeswoman for Russia's Emergencies Ministry said. The reason for the collision, near the town of Naro-Fominsk 55 km (34 miles) southwest of Moscow, was not immediately clear. (Photo by Grigory Dukor/Reuters)

People observe the landslide-affected area after the landslide at Lumle village in Kaski district July 30, 2015. Landslides triggered by torrential rain in Nepal swept through villages on Thursday, killing at least 30 people close to the nation's most popular trekking circuit, home ministry officials said. (Photo by Navesh Chitrakar/Reuters)

Gold medallist Rachelle Simpson of the U.S. celebrates after the women's 20m high dive competition during the Aquatics World Championships in Kazan, Russia August 4, 2015. (Photo by Hannibal Hanschke/Reuters)

A man sits under lanterns and decorations on a street ahead of the Chinese Lunar New Year in Chinatown Yangon, Myanmar January 23, 2017. (Photo by Soe Zeya Tun/Reuters)

In this April 1, 2017 picture a man dressed as a “Harramacho” a traditional character from the Navalacruz carnival poses for a picture before a traditional Spanish mask gathering in the small village of Casavieja, Spain. Every spring they come from towns across central and northwestern Spain, clad in elaborate costumes – some as trees, others as bears, still others as monsters who could have emerged from some sort of fever dream. (Photo by Daniel Ochoa de Olza/AP Photo)

A vendor holds a fried spider along a street in Phnom Penh, Cambodia, April 10, 2017. (Photo by Samrang Pring/Reuters)

A pilot inflates a hot air balloon while taking part in the 38th International Balloon Festival of Chateau-d'oex, Switzerland, 23 January 2016. The festival takes place from 23 to 31 January. (Photo by Vincent Vannay/EPA)

A man carries a bag on his back in Guangzhou, Guangdong province, January 26, 2016. According to traffic police, over 2.9 billion trips will be made around China during the 40-day Spring Festival travel rush, which started on January 24. (Photo by Reuters/Stringer)