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Environmental NGO Greenpeace is concerned that Russia's new floating nuclear plant could turn into a 'Chernobyl on ice".
"If you visit, please remember that a terrible tragedy occurred there."
Ukraine marked on Friday the 33rd anniversary of the Chernobyl nuclear disaster, when the 4th unit of the plant exploded in the early hours of April 26, 1986.
As the radiation recedes, visitors to the Chernobyl nuclear plant and neighbouring town of Pripyat are creating a different kind of pollution - one that requires another clean-up.
In Chernobyl, Ukraine, the site of the world’s worst nuclear disaster, a giant protective shield is slowly being moved into place a couple of feet at a time.
After years of work and 1.5 billion euros, the new safety housing for the stricken Chernobyl nuclear reactor begins to slide gently into place.