A barn painted with the U.S. flag is seen in the snow covered field in Kanawha, Iowa, United States, January 16, 2016. Iowa will be the first state to hold its primary, with both Democratic and Republican events being held February 1, 2016. (Photo by Jim Young/Reuters)

Assi Mbengue nibbles as she prepares for the start of Las Palmas' Carnival Queen ceremony in Las Palmas, Spanish Canary Island of Gran Canaria, February 24, 2017. (Photo by Borja Suarez/Reuters)

Aerial photo taken on March 4, 2017 shows cole flower fields in Luoping County, southwest China's Yunnan Province. (Photo by Xinhua/Barcroft Images)

On Saturday, September 2, 2017, local Chinese villagers gathered to celebrate a folk festival parade known as “Dog carrying Day” in Jiaobang village, Gedong Town, Jianhe county, Qiandongnan Miao and Dong Autonomous Prefecture, southwest China's Guizhou province. (Photo by Imaginechina/Rex Features/Shutterstock)

The Boeing 747-8 cargo plane pilot has seen thunderstorms, shooting stars and sunsets from up above the clouds and has looked down on mountaintops, carpets of cloud and cities lit up at night. The incredible pictures give a glimpse of the view from the pilots are treated to every day. Here: Shooting stars over India. (Photo by Christiaan van Heijst/Caters News Agency)

A frozen public bench is seen next to a lake side due to the heavy wind conditions in Geneva February 8, 2015. (Photo by Pierre Albouy/Reuters)

Fireworks explode over Elizabeth Tower housing the Big Ben clock in London. (Photo by Kirsty Wigglesworth/Associated Press)

Two female soldiers have their picture taken by an army colleague at Mangyongdae. (Photo by Gavin John/Mediadrumworld.com)