Delhi, india (links used)
http://money.cnn.com/2016/02/17/news/economy/india-new-delhi-air-pollution/
http://www.cnn.com/2016/11/07/asia/india-new-delhi-smog-pollution/
http://aqicn.org/map/india/
https://en.wikipedia.org/wiki/Environmental_issues_in_Delhi
http://www.telegraph.co.uk/travel/destinations/asia/india/articles/delhi-most-polluted-city-in-the-world/
https://en.wikipedia.org/wiki/Air_Quality_in_Delhi
http://www.cnn.com/2016/11/07/asia/india-new-delhi-smog-pollution/
http://aqicn.org/map/india/
https://en.wikipedia.org/wiki/Environmental_issues_in_Delhi
http://www.telegraph.co.uk/travel/destinations/asia/india/articles/delhi-most-polluted-city-in-the-world/
https://en.wikipedia.org/wiki/Air_Quality_in_Delhi
cairo, egypt (Links used)
https://en.wikipedia.org/wiki/Environmental_issues_in_Egypt
https://www.numbeo.com/pollution/in/Cairo-Egypt
http://www.usatoday.com/story/news/world/2014/10/25/cairo-pollution-black-cloud/17600563/
http://www.al-monitor.com/pulse/originals/2015/10/egypt-burning-garbage-black-cloud-patrols.html
http://www.al-monitor.com/pulse/originals/2014/03/egypt-nile-pollution-drinking-water-shortage.html
http://www.egyptindependent.com/news/water-cairo-reason-panic
https://www.numbeo.com/pollution/in/Cairo-Egypt
http://www.usatoday.com/story/news/world/2014/10/25/cairo-pollution-black-cloud/17600563/
http://www.al-monitor.com/pulse/originals/2015/10/egypt-burning-garbage-black-cloud-patrols.html
http://www.al-monitor.com/pulse/originals/2014/03/egypt-nile-pollution-drinking-water-shortage.html
http://www.egyptindependent.com/news/water-cairo-reason-panic
port-au-prince, haiti (links used)
http://water.org/country/haiti/
https://thewaterproject.org/water-crisis/water-in-crisis-haiti
https://medium.com/@durandis/haiti-a-water-crisis-in-the-pipeless-nation-50f6c0314b9e#.qgjz4n4h9
http://phys.org/news/2014-04-alarm-air-pollution-haiti.html
https://www.numbeo.com/pollution/country_result.jsp?country=Haiti
https://thewaterproject.org/water-crisis/water-in-crisis-haiti
https://medium.com/@durandis/haiti-a-water-crisis-in-the-pipeless-nation-50f6c0314b9e#.qgjz4n4h9
http://phys.org/news/2014-04-alarm-air-pollution-haiti.html
https://www.numbeo.com/pollution/country_result.jsp?country=Haiti