The Victorian pier at Saltburn stands against a stunning winter sunrise on November 25, 2015 in Saltburn-by-the-Sea, England. After a mild week the wintery weather is due to return over the weekend. (Photo by Ian Forsyth/Getty Images)





A bird flies over the sea as smokes rises from the chimneys at the Kakogawa Industrial Area on November 21, 2015 in Himeji, Japan. (Photo by Buddhika Weerasinghe/Getty Images)





The sun is seen rising behind a skywheel in Korla, Xinjiang Uighur Autonomous Region, November 10, 2015. (Photo by Reuters/China Daily)





A passenger plane flies through aircraft contrails in the skies near Heathrow Airport in west London, in this April 12, 2015 file photo. (Photo by Toby Melville/Reuters)





A cyclist rides across the Mimico Creek Bridge inside Humber Bay Park in Toronto, November 25, 2015. (Photo by Mark Blinch/Reuters)





A woman walking her dog is silhouetted against the sky at sunset in Pflaumdorf westward of Fuerstenfeldbruck, Germany, December 5, 2015. (Photo by Michaela Rehle/Reuters)





A crane is seen during dusk at a port in Tokyo, Japan, December 7, 2015. Picture taken December 7, 2015. (Photo by Yuya Shino/Reuters)





Migrating starlings fly past electricity pylons in the Kent countryside, Britain in this October 26, 2015 file photo. (Photo by Dylan Martinez/Reuters)





A Saudi man trains his son to ride a horse in a desert near Tabuk, Saudi Arabia, December 11, 2015. (Photo by Mohamed Al Hwaity/Reuters)





A Saudi man trains his son to ride a horse in a desert near Tabuk, Saudi Arabia, December 11, 2015. (Photo by Mohamed Al Hwaity/Reuters)





People enjoy the sunny weather on the Smetovi mountain range near Zenica, Bosnia and Herzegovina, December 20, 2015. (Photo by Dado Ruvic/Reuters)





A woman walks on the Smetovi mountain range near Zenica, Bosnia and Herzegovina, December 20, 2015. (Photo by Dado Ruvic/Reuters)





A sailboat is silhouetted by the rising sun, Friday, November 13, 2015, as it passes by the coast of Surfside, Fla. (Photo by Wilfredo Lee/AP Photo)





In this picture taken Thursday, November 12, 2015, Bahraini youths play soccer on a village field as the sun sets in Malkiya, Bahrain. (Photo by Hasan Jamali/AP Photo)





Pakistani religious students share a swing as the sun sets during a break before evening prayers at a park adjacent to their seminary in Islamabad, Pakistan, Thursday, November 26, 2015. (Photo by B.K. Bangash/AP Photo)





Construction workers put the finishing touches to Christmas lights on the Royal Mile on November 26, 2015 in Edinburgh,Scotland. The construction named the 'Street of Light' is having the finishing touches put in place, the installation consists of twenty four arches and has more than 60,000 lights, secured to a large aluminium truss. (Photo by Jeff J Mitchell/Getty Images)





In this photo made with a long exposure, blades on wind turbines spin to produce electricity on Tuesday, December 8, 2015, at a wind farm near Ellsworth, Kan. (Photo by Charlie Riedel/AP Photo)





Russian Soyuz TMA-19M rocket booster is being installed at the launch pad at Baikonur cosmodrome in Kazakhstan, December 13, 2015. (Photo by Maxim Shipenkov/EPA)





A couple watches the sunset over a sea of fog covering the Geneva Lake from Chardonne, Switzerland, 28 December 2015. (Photo by Jean-Christophe Bott/EPA)





An Afghan man is silhouetted as he rides on a cycle, in Herat, Afghanistan, November 19, 2015. (Photo by Jalil Rezayee/EPA)





The rising sun is blocked by the One World Trade Center tower seen from The Heights neighborhood of Jersey City, N.J., Friday, December 11, 2015. (Photo by Julio Cortez/AP Photo)