This winter, signs in Delhi indicate that the number of days in ‘severe’ and ‘very poor’ air pollution categories is comparatively less, as compared to the previous winter.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/delhi%E2%80%99s-winter-air-improves-more-needs-be-done
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/daily-news-analysis-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/coal
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/thermal-power-plants
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/industrial-pollution