Noise is the permanent background score to life in bustling cities and towns. But when it exceeds a threshold, it disrupts the thought process and causes great annoyance. The World Health Organisation says it also affects health. Prolonged exposure to noise at particular levels can lead to hypertension.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/cutting-noise
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/hindu-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/noise-pollution-control
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health-effects
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ministry-environment-and-forests-moef
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/who