Chernobyl 25 Years Later
25th anniversary of Chernobyl Nuclear Power Plant Accident
Chernobyl: 25 Years After World's Worst Nuclear Power Plant Accident
A radioactivity warning sign in front of the remains of the damaged fourth reactor at the Chernobyl nuclear power plant, seen on April 12, 2006. March 26, 2011 marks 25 years since the world's worst nuclear accident. (Genia Savilov/AFP/Getty Images)
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