Overview:Dzerzhinsk, a Russian city 240 miles east of Moscow, is considered the most chemically polluted town on Earth. Factories producing industrial chemicals (and in Soviet times, chemical weapons) employ a quarter of the 300,000 residents in a city where life expectancy has fallen to 42-47 years, the death rate is 2.6 times higher than the birth rate, and the men are close to impotence. Reporter Tim Samuels recorded a series of in-depth interviews with the inhabitants of Dzerzhinsk for the Correspondent strand, revealing what life is like for the beleaguered populace.