A blurred panaroma of Roemerberg historic center is reflected in a soap bubble in Frankfurt am Main, Germany, 09 July 2015. (Photo by Frank Rumpenhorst/EPA)

A fisherman throws his net to catch fish in a lagoon in Batticaloa November 24, 2015. (Photo by Dinuka Liyanawatte/Reuters)

Runners dressed in Christmas-themed outfits compete during a charity Santa run in Shanghai, China, November 29, 2015. (Photo by Aly Song/Reuters)

Lightning strikes near Jacobsdorf at the Oder-Spree district in eastern Germany, September 1, 2015. (Photo by Patrick Pleul/AFP Photo)

Tourists walk above a tea plantation in Enshi, Hubei province, December 27, 2015. (Photo by Reuters/Stringer)

A murmuration of migrating starlings is seen across the sky in southern Israel December 31, 2015. (Photo by Amir Cohen/Reuters)

Artist Heather Dewey-Hagborg's 'Stranger Visions', comprising of 3D printed faces extracted from DNA taken from discarded cigarette butts and chewing gum, is displayed at the Big Bang Data exhibition at Somerset House on December 2, 2015 in London, England. The show highlights the data explosion that's radically transforming our lives. It opens on December 3, 2015 and runs until February 28, 2016 at Somerset House. (Photo by Peter Macdiarmid/Getty Images for Somerset House)

A young woman drinks beer at Hofbraeuhaus beer tent on the opening day of the 2015 Oktoberfest on September 19, 2015 in Munich, Germany. The 182nd Oktoberfest will be open to the public from September 19 through October 4and will draw millions of visitors from across the globe in the world's largest beer fest. (Photo by Johannes Simon/Getty Images)