Where is the world's noisiest city?

The 'ignored pollutant' can cause depression, stress, diabetes and heart attacks. What are cities doing to curb excess noise?The constant roar of traffic, incessant construction noise, piercing sirens, honking horns, shrieking loudspeakers - noise in cities is clearly a nuisance.But it's also a danger. The World Health Organisation (WHO) has described noise pollution as an underestimated threat that can cause hearing loss, cardiovascular problems, cognitive impairment, stress and depression. Some experts go further: they believe exposure to environmental noise could be slowly killing us. Continue reading...