A Bangalorean has developed a prototype pollution control device which he claims is 100 per cent efficient in controlling air
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/new-prototype-pollution-control-device-developed
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/deccan-herald-bangalore
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment