Anniversary of the Chernobyl nuclear disaster

COMM ARCHIVE UNIAN The destroyed fourth power-generating unit of Chornobyl reactor is seen from a helicopter on Sunday, April 27, 1986. Smoke eddies are clearly seen above the ruins of exploded reactor. Chornobyl reactor exploded nearly 20 years ago. Is the world's worst ever nuclear accident. Ukraine is preparing to mark the 20th anniversary of this disaster on April, 26, 2006. Photo by Vladimir Savran / UNIAN