CHERNOBYL, UKRAINE - APRIL 26: New protective shelter over the nuclear reactor Unit 4 at Chernobyl nuclear power plant is seen during the 31st anniversary of Chernobyl nuclear disaster Kiev, Ukraine on April 26, 2017. The Chernobyl accident occurred on 26 April 1986 at the Chernobyl Nuclear Power Plant near the city of Pripyat. (Photo by Vladimir Shtanko/Anadolu Agency/Getty Images)
