Scientists including two Indian-origin researchers have developed a fleet of portable pollution sensors that allow users to monitor air quality on their smartphones.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/now-sensors-let-you-detect-air-pollution-your-cellphone
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/indian-express-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/scientists
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[5] http://admin.indiaenvironmentportal.org.in/thesaurus/mobile-phone
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-quality-monitoring
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution-control
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/asthma
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health-effects
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/respiratory-diseases
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/science-and-technology