A view of an entrance to the concrete case surrounding the pressure vessel of the reactor is seen inside the decommissioned Unit Six of the Greifswald nuclear power station outside Lubmin August 5, 2014. Unit Six was a part of East Germany's largest nuclear power plant that was nearly completed in 1990, when the country's re-unification halted construction. (Photo by Thomas Peter/Reuters)

Wildlife category, open shortlist. “Buffaloes and stars”. This picture, taken at Zimanga game reserve in KwaZulu-Natal, South Africa, used an in-camera multiple exposure, with the first lit for the buffaloes and the second focused on the stars. (Photo and caption by Andreas Hemb/2017 Sony World Photography Awards)

A couple walk on a catwalk in a flooded Saint Mark Square during a period of seasonal high water in Venice on October 29, 2018. Venice frequently floods when high winds push in water from the lagoon, but Monday's levels are exceptional and forecast to rise even higher, to 160 centimeters (nearly 63 inches) by mid-afternoon. (Photo by Manuel Silvestri/Reuters)

A sinkhole is seen on the shore of the Dead Sea near Kibbutz Ein Gedi, Israel July 27, 2015. The Dead Sea is shrinking, and as its waters vanish at a rate of more than one meter a year, hundreds of sinkholes, some the size of a basketball court, some two storeys deep, are devouring land where the shoreline once stood. (Photo by Amir Cohen/Reuters)

In this October 14, 2013 photo, ecology professor Ricardo Freitas catches a broad-snouted caiman to examine, then release back into the water channel in the affluent Recreio dos Bandeirantes suburb of Rio de Janeiro, Brazil. Caimans are like tanks, a very old species with a remarkable capacity for renovation that allows them to survive under extreme conditions where others couldn't, said Freitas, who runs the Instituto Jacare, or the Caiman Institute, which aims to protect the reptiles. (Photo by Felipe Dana/AP Photo)

An internally displaced Afghan girl plays near their shelter at a refugee camp in Kabul January 13, 2015. (Photo by Omar Sobhani/Reuters)

English fashion modelDaisy Lowe performs a DJ set for Badoos #DateOfTheDead party at La Bodega Negra on October 26, 2017 in London, England. (Photo by Tabatha Fireman/Tabatha Fireman/Getty Images for Badoo)

Janet Layug walks off stage during the Bikini International competition at the Greater Columbus Convention Center during the Arnold Sports Festival 2017 on March 4, 2017 in Columbus, Ohio. (Photo by Maddie Meyer/Getty Images)