Dawn breaks over Pyongyang, North Korea, as buildings poke through the midst and the Juche Tower, left, stands by the Taedong riverbank on Tuesday, October 13, 2015. (Photo by Wong Maye-E/AP Photo)





Fog forms beneath the Gorny Convent of the Russian Orthodox Church in Ein Kerem, an ancient village near Jerusalem Sunday. November 8, 2015. (Photo by Dusan Vranic/AP Photo)





The morning sun shines through the fog on the Hohenjesarscher lake in Alt Zeschdorf, Germany October 1, 2015. (Photo by Patrick Pleul/DPA via ZUMA Press)





Stirling Castle is seen above morning mist, in Scotland September 30, 2015. (Photo by Russell Cheyne/Reuters)





The sun shines through the trees and trees of the 'Grosser Feldberg' mountain in the Taunus mountainous region, not far from Frankfurt, Germany, October 5, 2015. (Photo by Frank Ruumpenhorst/EPA)





A couple stands on an embankment of the Yenisei River, covered in a frosty fog, with the air temperature at about minus 22 degrees Celsius (minus 7.6 degrees Fahrenheit), in the Siberian town of Divnogorsk near Krasnoyarsk, Russia, November 22, 2015. (Photo by Ilya Naymushin/Reuters)





The Wallace Monument sits above the morning mist in Stirling, Scotland September 30, 2015. (Photo by Russell Cheyne/Reuters)





A hiker walks into a sea of fog over Lake Leman at the Tour de Gourze near Lausanne, Switzerland, December 3, 2015. (Photo by Denis Balibouse/Reuters)





Buildings in construction are seen among mist during a hazy day in Rizhao, Shandong province, China, October 18, 2015. (Photo by Reuters/Stringer)





Autumn coloured leaves are pictured beside fog covering the lake of Brienz on a sunny autumn day in the Berner Oberland in Giessbach November 1, 2015. (Photo by Ruben Sprich/Reuters)





Workers cross Westminster Bridge towards the Houses of Parliament on a misty morning in London, Britain, November 2, 2015. (Photo by Toby Melville/Reuters)





Fog begins to clear on the A477 near LLanddowror, Wales, November 2, 2015. (Photo by Rebecca Naden/Reuters)





A motor boat travels through the frosty fog along the Yenisei River at air temperature some minus 21 degrees Celsius in the Taiga district outside the Siberian city of Krasnoyarsk, Russia, November 16, 2015. (Photo by Ilya Naymushin/Reuters)





Late autumn colours in Vosges mountains mark a change in season in Rimbach in the Alsace region, Eastern France, November 3, 2015. (Photo by Jacky Naegelen/Reuters)





A countryside road is seen during a hazy day in Upperco Maryland November 5, 2015. (Photo by Carlos Barria/Reuters)





People walk along a forest as the sun shines over fog near Albis Pass mountain pass, Switzerland November 12, 2015. (Photo by Arnd Wiegmann/Reuters)





A man and a woman travel in a rowboat along the Yenisei River through a frosty fog in the Taiga district, with the air temperature at about minus 22 degrees Celsius (minus 7.6 degrees Fahrenheit), outside the Siberian city of Krasnoyarsk, Russia, November 22, 2015. (Photo by Ilya Naymushin/Reuters)





Cranes and residential buildings under construction are seen among thick fog in Anyang, Henan province, China, December 2, 2015. (Photo by Reuters/Stringer)





A woman photographs a sea of fog over Lake Leman at the Tour de Gourze near Lausanne, Switzerland, December 3, 2015. (Photo by Denis Balibouse/Reuters)





A couple walks through the fog covered landscape at the Bucheneggpass, Switzerland December 5, 2015. (Photo by Arnd Wiegmann/Reuters)





Low-lying fog over Canary Wharf, seen from the viewing gallery of the Shard in London, UK on November 1, 2015. (Photo by The Shard/PA Wire)





A tree stands in the morning fog in Dresden, Germany, 06 November 2015. (Photo by Arno Burgi/EPA)





Lights on the roads and a country village are seen under a “sea of clouds” on the South Han River and North Han River, as it is seen from Mount Yebin in Namyangju, Gyeonggi-do, South Korea, 15 September 2015. (Photo by Jeon Heon-Kyun/EPA)





A general view shows the part of the skyline of Dubai covered in an early morning fog on October 5, 2015. (Photo by Rene Slama/AFP Photo)





Morning fog floats above the village of Pilisborosjeno, 20 kms north of Budapest, Hungary, 25 October 2015. (Photo by Balazs Mohai/EPA)





The Corning Tower at the Empire State Plaza in Albany is shrouded in autumn colors and morning fog from the Hudson River as seen from East Greenbush, N.Y., on Tuesday, October 27, 2015. (Photo by Mike Groll/AP Photo)





A woman walks with her dog on a foggy morning near Dresden, Germany, 06 November 2015. (Photo by Arno Burgi/EPA)





Mist and frost lingers in fields surrounding the village of Evercreech as the winter sun begins to rise on November 24, 2014 in Somerset, England. (Photo by Matt Cardy/Getty Images)





Morning fog lighted by the sunrise in Bernbeuren, Germany 22 August 2015. (Photo by Karl-Josef Hildenbrand/EPA)





A railroad worker inspects the tracks behind his truck alongside the Androsscoggin River as a storm clears to reveal colorful fall foliage Thursday, October 29, 2015, near Gorham, N.H. (Photo by Robert F. Bukaty/AP Photo)





Trees covered in mist are seen on Table Mountain national park above the city of Cape Town, South Africa, Sunday, October 4, 2015. (Photo by Schalk van Zuydam/AP Photo)





Early morning fog covers the C&O Canal near the Great Falls in Potomac, MD, November 3, 2015. (Photo by Astrid Riecken/The Washington Post)