The world's worst ever nuclear disaster took place at Chernobyl nuclear power plant in Pripyat, Ukraine back in 1986, and its effects are still being felt today. A 30-km (19-mile) exclusion zone is in ...

The catastrophe that unfolded at Chernobyl in 1986 was supposed to be entombed behind layers of concrete and steel, a disaster frozen in time rather than a recurring threat. Now Ukrainian officials ...