Toys and a gas mask lay in dust, in an abandoned pre school in the deserted city of Pripyat on January 25, 2006 in Chernobyl, Ukraine. Prypyat and the surrounding area will not be safe for human habitation for several centuries. Scientists estimate that the most dangerous radioactive elements will take up to 900 years to decay sufficiently to render the area safe. (Photo by Daniel Berehulak/Getty Images)
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