Difference between revisions of "Timeline of pollution in Delhi"

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This is a '''timeline of pollution in Delhi'''.
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This is a '''timeline of pollution in Delhi''', which is ranked the highest in the world.<ref>{{cite web |title=India takes steps to curb air pollution |url=https://www.who.int/bulletin/volumes/94/7/16-020716/en/ |website=who.int |accessdate=10 May 2019}}</ref> Delhi suffers severe levels of {{w|air pollution}}, most of which comes from diesel-burning trucks and buses.<ref>{{cite web |title=Where Is the Worst Air in the World? |url=https://slate.com/technology/2013/03/worst-air-pollution-in-the-world-beijing-delhi-ahwaz-and-ulaanbaatar.html |website=slate.com |accessdate=10 May 2019}}</ref>
  
 
==Big picture==
 
==Big picture==
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! Time period !! Development summary  
 
! Time period !! Development summary  
 
|-
 
|-
| 1980s || The issue of air and water pollution in Delhi enters the Supreme Court's agenda in the late decade, and periodic statements and orders are issued from the bench.<ref name="Environmentalism">{{cite book |last1=Bauer |first1=Joanne R |title=Forging Environmentalism: Justice, Livelihood, and Contested Environments: Justice, Livelihood, and Contested Environments |url=https://books.google.com.ar/books?id=4G5sBgAAQBAJ&pg=PA198&lpg=PA198&dq=%22pollution%22+%22delhi%22+%22in+july%22+%221980..2019%22&source=bl&ots=wj80RtlT_-&sig=ACfU3U0LMYBphSCEP7yFPIs4nmiCA_O2fQ&hl=en&sa=X&ved=2ahUKEwj3ku_hvY_iAhVHF7kGHeIyCiUQ6AEwAHoECAUQAQ#v=onepage&q=%22pollution%22%20%22delhi%22%20%22in%20july%22%20%221980..2019%22&f=false}}</ref>
+
| 1980s || The issue of air and water pollution in Delhi enters the [[w:Supreme Court of India|Supreme Court]]'s agenda in the late decade, and periodic statements and orders are issued from the bench.<ref name="Environmentalism">{{cite book |last1=Bauer |first1=Joanne R |title=Forging Environmentalism: Justice, Livelihood, and Contested Environments: Justice, Livelihood, and Contested Environments |url=https://books.google.com.ar/books?id=4G5sBgAAQBAJ&pg=PA198&lpg=PA198&dq=%22pollution%22+%22delhi%22+%22in+july%22+%221980..2019%22&source=bl&ots=wj80RtlT_-&sig=ACfU3U0LMYBphSCEP7yFPIs4nmiCA_O2fQ&hl=en&sa=X&ved=2ahUKEwj3ku_hvY_iAhVHF7kGHeIyCiUQ6AEwAHoECAUQAQ#v=onepage&q=%22pollution%22%20%22delhi%22%20%22in%20july%22%20%221980..2019%22&f=false}}</ref>
 
|-
 
|-
| 1990s || Delhi reaches among the world's worst urban air quality. Air pollution's heavy impacts on human health, including infant mortality and asthma, leads to sustained efforts for improvement by Indian civil society.<ref name="Delhi air quality">{{cite web |title=Delhi air quality |url=http://wwf.panda.org/?204661/Delhi-air-quality |website=panda.org |accessdate=9 May 2019}}</ref> Several small and medium-size industries are relocated from Delhi  as a measure to control pollution.<ref>{{cite web |title=Delhi lacks long-term plan to check industrial pollution |url=https://www.hindustantimes.com/delhi-news/delhi-lacks-plan-to-check-industrial-pollution/story-XvnVL4h3w1ki2mdhFb9fuK.html |website=hindustantimes.com |accessdate=10 May 2019}}</ref>
+
| 1990s || Delhi reaches among the world's worst urban level of air quality. Air pollution's heavy impacts on human health, including infant mortality and asthma, leads to sustained efforts for improvement by Indian civil society.<ref name="Delhi air quality">{{cite web |title=Delhi air quality |url=http://wwf.panda.org/?204661/Delhi-air-quality |website=panda.org |accessdate=9 May 2019}}</ref> Several small and medium-size industries are relocated from Delhi  as a measure to control pollution.<ref>{{cite web |title=Delhi lacks long-term plan to check industrial pollution |url=https://www.hindustantimes.com/delhi-news/delhi-lacks-plan-to-check-industrial-pollution/story-XvnVL4h3w1ki2mdhFb9fuK.html |website=hindustantimes.com |accessdate=10 May 2019}}</ref>
 
|-
 
|-
| 2010s || "Over the last two years, Delhi’s pollution levels were high enough to affect the respiratory and cardiac systems of even healthy people. The health impacts of this pollution may be experienced even during “light physical activity”, as IndiaSpend reported on June 15, 2018."<ref name="Despite government’s emergency pollution plan, Delhi once again breathed deadly air through winter"/>
+
| 2000s || Till mid-decade, busy Central and South Delhi areas are high air pollution zones. From then on, dirty air would spread to even cleaner residential areas.<ref>{{cite web |last1=Chauhan |first1=Chetan |title=Delhi cold brings pollution, illness |url=https://www.hindustantimes.com/delhi-news/delhi-cold-brings-pollution-illness/story-IZYWelQYab0Jf0poMByxWO.html |website=hindustantimes.com |accessdate=10 May 2019}}</ref>
 +
|-
 +
| 2010s || Emergency plans to tackle the city’s annual crisis are reported to have failed in the last years.<ref name="Despite government’s emergency pollution plan, Delhi once again breathed deadly air through winter"/> Delhi’s pollution levels reach high enough to affect the respiratory and cardiac systems of even healthy people. <ref name="Despite government’s emergency pollution plan, Delhi once again breathed deadly air through winter"/> The city ranks among the most polluted in the world.
 
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{| class="sortable wikitable"
 
{| class="sortable wikitable"
! Year !! Month and date !! Category !! Details
+
! Year !! Month and date !! Pollution type !! Type of event !! Details
 +
|-
 +
| 1947 || || {{w|Air pollution}} || || India becomes an independent state. At the time, fog in Delhi is rather rare.<ref name="Balachandran">{{cite web |last1=Balachandran |first1=Manu |last2=Thomas |first2=Maria |title=Delhi’s air is so toxic that schools are closing, expats are fleeing, and the visiting UK PM could lose hours from her life |url=https://qz.com/india/828754/india-pollution-schools-shut-down-expats-flee-and-the-visiting-uk-pm-theresa-may-risks-losing-hours-from-her-life-as-delhi-chokes/ |website=qz.com |accessdate=12 June 2019}}</ref>
 +
|-
 +
| 1950–1951 || December–February || {{w|Air pollution}} || || Only one foggy day is reported in the winter months in the city.<ref name="Balachandran"/>
 +
|-
 +
| 1955 || || {{w|Water pollution}} || Crisis || Sewage and industrial wastes from the {{w|Najafgarh drain}} cause a famous {{w|jaundice}} episode in Delhi. The Najafgarh drain comes to be known as "sorrow of Delhi"<ref>{{cite book |last1=Agarwal |first1=S. K. |title=Water Pollution |url=https://books.google.com.ar/books?id=VRl-24p3ju8C&pg=PA81&lpg=PA81&dq=%22pollution%22+%22delhi%22+%22in+1950..1969%22&source=bl&ots=GBwERB4Xbx&sig=ACfU3U3yFlFqPOOwPTxAV1K0Rb7e7cvnkg&hl=en&sa=X&ved=2ahUKEwjf2JD4oIziAhUOHbkGHWkIAfwQ6AEwCnoECAkQAQ#v=onepage&q=%22pollution%22%20%22delhi%22%20%22in%201950..1969%22&f=false}}</ref> 
 +
|-
 +
| 1974 || || {{w|Water pollution}} || Policy || The Central Pollution Control Board is set up under the Water Act.<ref name="Pollution in Delhi : A Chronic Problem"/>
 +
|-
 +
| 1982 || || General || Policy || Delhi passes its first Industrial Policy.<ref name="Pollution in Delhi : A Chronic Problem">{{cite web |title=Pollution in Delhi : A Chronic Problem |url=https://www.jagranjosh.com/current-affairs/pollution-in-delhi-a-chronic-problem-1510211965-1 |website=jagranjosh.com |accessdate=9 May 2019}}</ref>
 +
|-
 +
| 1985 || || {{w|Air pollution}} || Policy || The {{w|Supreme Court of India}} states verdict to deal with the chronic problem of vehicular pollution in Delhi, one of the earliest stand taken by judiciary.<ref name="Pollution in Delhi : A Chronic Problem"/>
 
|-
 
|-
| 1955 || || || "The Najafgarth drain came to be known as "sorrow of Delhi""<ref>{{cite book |last1=Agarwal |first1=S. K. |title=Water Pollution |url=https://books.google.com.ar/books?id=VRl-24p3ju8C&pg=PA81&lpg=PA81&dq=%22pollution%22+%22delhi%22+%22in+1950..1969%22&source=bl&ots=GBwERB4Xbx&sig=ACfU3U3yFlFqPOOwPTxAV1K0Rb7e7cvnkg&hl=en&sa=X&ved=2ahUKEwjf2JD4oIziAhUOHbkGHWkIAfwQ6AEwCnoECAkQAQ#v=onepage&q=%22pollution%22%20%22delhi%22%20%22in%201950..1969%22&f=false}}</ref>
+
| 1987 || || {{w|Air pollution}} || Study || A survey estimates that 1172 tonnes of suspended particulate matter, hydrocarbons, sulphur dioxide, nitrogen oxides, carbon monoxide and other poisonous gases are spewed into the air in Delhi by industrial units, the various modes of transport and the power sector.<ref name="Air Pollutionf"/>
 
|-
 
|-
| 1974 || || || The Central Pollution Control Board is set up under the Water Act.<ref name="Pollution in Delhi : A Chronic Problem"/>
+
| 1990 – 2001 || || General || Policy || A Master Plan of Delhi allows for "light" industry to be set up in residential areas. This creates a leeway for many industries which are not in the hazardous category (H) to start in the areas vacated by the  "H" category industries without the necessity for any permission from the Delhi Pollution Control Committee.<ref name="Urban Environmental Governance">{{cite book |last1=Raju |first1=K.V. |last2=Ravindra |first2=A. |last3=Manasi |first3=S. |last4=Smitha |first4=K.C. |last5=Srinivas |first5=Ravindra |title=Urban Environmental Governance in India: Browsing Bengaluru |url=https://books.google.com.ar/books?id=9LRTDwAAQBAJ&pg=PA51&lpg=PA51&dq=%22pollution%22+%22delhi%22+%22in+july%22+%221980..2019%22&source=bl&ots=Dx5PcfWeTQ&sig=ACfU3U1LpUtnPAgk7TjwpaKWHVliKxfGMg&hl=en&sa=X&ved=2ahUKEwj3ku_hvY_iAhVHF7kGHeIyCiUQ6AEwCnoECAkQAQ#v=onepage&q=%22pollution%22%20%22delhi%22%20%22in%20july%22%20%221980..2019%22&f=false}}</ref>
 
|-
 
|-
| 1982 || || || Delhi passes its first Industrial Policy.<ref name="Pollution in Delhi : A Chronic Problem">{{cite web |title=Pollution in Delhi : A Chronic Problem |url=https://www.jagranjosh.com/current-affairs/pollution-in-delhi-a-chronic-problem-1510211965-1 |website=jagranjosh.com |accessdate=9 May 2019}}</ref>
+
| 1993 – 2000 || || {{w|Light pollution}} || Study || Author Pavan Kumar says {{w|New Delhi}}, along with {{w|Telangana}}, {{w|Maharashtra}}, {{w|Karnataka}} and {{w|Uttar Pradesh}} experienced increase in “very high light pollution intensity” in the period.<ref>{{cite web |title=Not just air, light pollution too is on the rise in India |url=https://scroll.in/article/909978/not-just-air-light-pollution-too-is-on-the-rise-in-india |website=scroll.in |accessdate=8 May 2019}}</ref>
 
|-
 
|-
| 1985 || || {{w|Air pollution}} || The Supreme Court of India states veredict to deal with the chronic problem of vehicular pollution in Delhi, one of the earliest stand taken by judiciary.<ref name="Pollution in Delhi : A Chronic Problem"/>
+
| 1994 || || {{w|Water pollution}} || Policy || The Supreme Court takes ''[[w:Sua sponte|suo motu]]'' notice of a newspaper report about the pollution of the {{w|Yamuna}}.<ref name="Environmentalism"/>  
 
|-
 
|-
| 1987 || || {{w|Air pollution}} || A survey estimates that 1172 tonnes of suspended particulate matter, hydrocarbons, sulphur dioxide, nitrogen oxides, carbon monoxide and other poisonous gases are spewed into the air in Delhi by industrial units, the various modes of transport and the power sector.<ref name="Air Pollutionf"/>
+
| 1995 || || General || Policy || The {{w|Supreme Court of India}} asks the Delhi Pollution Control Committee to categorize all industrial units in the city according to pollution hazard they pose.<ref name="Forging Environmentalism: Justice, Livelihood, and Contested Environments">{{cite book |last1=Bauer |first1=Joanne R. |title=Forging Environmentalism: Justice, Livelihood, and Contested Environments |url=https://books.google.com.ar/books?id=c5amHzE241EC&pg=PA198&lpg=PA198&dq=delhi+pollution+%22in+1990..1999%22&source=bl&ots=pTitq09Rse&sig=ACfU3U07H9wh6Fql_c2u_yDBo0XYXbM9Eg&hl=en&sa=X&ved=2ahUKEwjHoLaP94ziAhVbJrkGHc6XD0oQ6AEwAXoECAkQAQ#v=onepage&q=delhi%20pollution%20%22in%201990..1999%22&f=false}}</ref>
 
|-
 
|-
| 1990 – 2001 || || Policy || A Master Plan of Delhi allows for "light" industry to be set up in residential areas. This creates a leeway for many industries which are not in the hazardous category (H) to start in the areas vacated by the  "H" category industries without the necessity for any permission from the Delhi Pollution Control Committee.<ref name="Urban Environmental Governance">{{cite book |last1=Raju |first1=K.V. |last2=Ravindra |first2=A. |last3=Manasi |first3=S. |last4=Smitha |first4=K.C. |last5=Srinivas |first5=Ravindra |title=Urban Environmental Governance in India: Browsing Bengaluru |url=https://books.google.com.ar/books?id=9LRTDwAAQBAJ&pg=PA51&lpg=PA51&dq=%22pollution%22+%22delhi%22+%22in+july%22+%221980..2019%22&source=bl&ots=Dx5PcfWeTQ&sig=ACfU3U1LpUtnPAgk7TjwpaKWHVliKxfGMg&hl=en&sa=X&ved=2ahUKEwj3ku_hvY_iAhVHF7kGHeIyCiUQ6AEwCnoECAkQAQ#v=onepage&q=%22pollution%22%20%22delhi%22%20%22in%20july%22%20%221980..2019%22&f=false}}</ref>
+
| 1995 || ||  {{w|Air pollution}} || Policy || Delhi government introduces catalytic converter in passenger cars as vehicle control measure policy to curb air pollution in the city.<ref name="Pollution in Delhi : A Chronic Problem"/>
 
|-
 
|-
| 1993 – 2000 || || {{w|Light pollution}} || Study author Pavan Kumar says {{w|New Delhi}}, along with {{w|Telangana}}, {{w|Maharashtra}}, {{w|Karnataka}} and {{w|Uttar Pradesh}} experienced increase in “very high light pollution intensity” in the period.<ref>{{cite web |title=Not just air, light pollution too is on the rise in India |url=https://scroll.in/article/909978/not-just-air-light-pollution-too-is-on-the-rise-in-india |website=scroll.in |accessdate=8 May 2019}}</ref>
+
| 1996 || || {{w|Air pollution}} || || 46 foggy days are reported in the winter months in {{w|Delhi}}.<ref name="Balachandran"/>  
 
|-
 
|-
| 1994 || || {{w|Water pollution}} || The Supreme Court takes ''[[w:Sua sponte|suo motu]]'' notice of a newspaper report about the pollution of the {{w|Yamuna}}.<ref name="Environmentalism"/>  
+
| 1996 || February || {{w|Water pollution}} || Policy || The {{w|Supreme Court of India}} orders the Delhi state government to construct common effluent treatment plants, which the industries are required to pay for, to reduce water pollution.<ref name="Forging Environmentalism: Justice, Livelihood, and Contested Environments"/>  
 
|-
 
|-
| 1995 || || || The Indian Supreme Court asks the Delhi Pollution Control Committee to categorize all industrial units in the city according to pollution hazard they pose.<ref name="Forging Environmentalism: Justice, Livelihood, and Contested Environments">{{cite book |last1=Bauer |first1=Joanne R. |title=Forging Environmentalism: Justice, Livelihood, and Contested Environments |url=https://books.google.com.ar/books?id=c5amHzE241EC&pg=PA198&lpg=PA198&dq=delhi+pollution+%22in+1990..1999%22&source=bl&ots=pTitq09Rse&sig=ACfU3U07H9wh6Fql_c2u_yDBo0XYXbM9Eg&hl=en&sa=X&ved=2ahUKEwjHoLaP94ziAhVbJrkGHc6XD0oQ6AEwAXoECAkQAQ#v=onepage&q=delhi%20pollution%20%22in%201990..1999%22&f=false}}</ref>
+
| 1996 || April || General || Policy || The {{w|Supreme Court of India}} orders the relocation of factories away from residential areas.<ref name="Forging Environmentalism: Justice, Livelihood, and Contested Environments"/>
 
|-
 
|-
| 1995 || || || Delhi government introduces catalytic converter in passenger cars as vehicle control measure policy to curb air pollution in the city.<ref name="Pollution in Delhi : A Chronic Problem"/>
+
| 1997 || || {{w|Air pollution}} || Study || The annual suspended particulate matter average concentration in Delhi is 339.3 microgrammes per cubic meter.<ref name="Air Pollutionf">{{cite book |last1=Agarwal |first1=S. K. |title=Air Pollution |url=https://books.google.com.ar/books?id=dJlxyyLX0MoC&pg=PA21&lpg=PA21&dq=delhi+pollution+%22in+1990..1999%22&source=bl&ots=DEtF0ZVr2F&sig=ACfU3U1KGOrShtCgl4aKK6gcnO6XdSnwuQ&hl=en&sa=X&ved=2ahUKEwjHoLaP94ziAhVbJrkGHc6XD0oQ6AEwAnoECAgQAQ#v=onepage&q=delhi%20pollution%20%22in%201990..1999%22&f=false}}</ref>
 
|-
 
|-
| 1996 || February || {{w|Water pollution}} || The Indian Supreme Court orders the Delhi state government to construct common effluent treatment plants, which the industries are required to pay for, to reduce water pollution.<ref name="Forging Environmentalism: Justice, Livelihood, and Contested Environments"/>  
+
| 1998 || || {{w|Air pollution}} || Policy || The {{w|Supreme Court of India}} orders a major transformation of Delhi's transportation system, in response to a public interest petition on air pollution.<ref name="Forging Environmentalism: Justice, Livelihood, and Contested Environments"/>
 
|-
 
|-
| 1996 || April || || The Indian Supreme Court orders the relocation of factories away from residential areas.<ref name="Forging Environmentalism: Justice, Livelihood, and Contested Environments"/>
+
| 1998 || || {{w|Air pollution}} || Policy || Delhi government introduces unleaded petrol as vehicle control measure policy to curb air pollution in the city.<ref name="Pollution in Delhi : A Chronic Problem"/>
 
|-
 
|-
| 1997 || || {{w|Air pollution}} || The annual suspended particulate matter average concentration in Delhi is 339.3 microgrammes per cubic meter.<ref name="Air Pollutionf">{{cite book |last1=Agarwal |first1=S. K. |title=Air Pollution |url=https://books.google.com.ar/books?id=dJlxyyLX0MoC&pg=PA21&lpg=PA21&dq=delhi+pollution+%22in+1990..1999%22&source=bl&ots=DEtF0ZVr2F&sig=ACfU3U1KGOrShtCgl4aKK6gcnO6XdSnwuQ&hl=en&sa=X&ved=2ahUKEwjHoLaP94ziAhVbJrkGHc6XD0oQ6AEwAnoECAgQAQ#v=onepage&q=delhi%20pollution%20%22in%201990..1999%22&f=false}}</ref>
+
| 2000 || || {{w|Air pollution}} || Policy || Delhi government introduces reduction of benzene content in fuels and reduction of sulfur content in diesel as vehicle control measure policy to curb air pollution in the city.<ref name="Pollution in Delhi : A Chronic Problem"/>
 
|-
 
|-
| 1998 || || {{w|Air pollution}} || The Indian Supreme Court orders a major transformation of Delhi's transportation system, in response to a public interest petition on air pollution.<ref name="Forging Environmentalism: Justice, Livelihood, and Contested Environments"/>
+
| 2003 || || General || Policy || After Supreme Court order on hazardous waste, stringent actions are prompted by various State Pollution Control Board in Delhi.<ref name="Urban Environmental Governance"/>
 
|-
 
|-
| 1998 || || || Delhi government introduces unleaded petrol as vehicle control measure policy to curb air pollution in the city.<ref name="Pollution in Delhi : A Chronic Problem"/>
+
| 2003 || || {{w|Air pollution}} || || Delhi wins the {{w|United States Department of Energy}}'s first 'Clean Cities International Partner of the Year' award for its "bold efforts to curb air pollution and support alternative fuel initiatives".<ref name="cities.expressindia.com">{{cite web|url=http://cities.expressindia.com/fullstory.php?newsid=85665 |title=Express India |publisher=Cities.expressindia.com |accessdate=11 March 2011 |deadurl=yes |archiveurl=https://web.archive.org/web/20101231054504/http://cities.expressindia.com/fullstory.php?newsid=85665 |archivedate=31 December 2010 }}</ref>
 
|-
 
|-
| 2000 || || || Delhi government introduces reduction of benzene content in fuels and reduction of sulfur content in diesel as vehicle control measure policy to curb air pollution in the city.<ref name="Pollution in Delhi : A Chronic Problem"/>
+
| 2007 || || {{w|Air pollution}} || Study || Study finds that the conversion of buses from diesel to CNG in Delhi helped reduce {{w|particulates}}, {{w|carbon monoxide}}, and {{w|sulfur oxide}}, while lowering the sulphur content of fuels cut both {{w|sulfur dioxide}} and – due to SO2 converting to sulphates, fine particles (PM10). Another study only identified lower CO as a result of the change to {{w|compressed natural gas}} in Delhi.<ref name="Delhi air quality"/>
 
|-
 
|-
| 2003 || || Policy || After Supreme Court order on hazardous waste, stringent actions are prompted by various State Pollution Control Board in Delhi.<ref name="Urban Environmental Governance"/>
+
| 2009 || || {{w|Water pollution}}, {{w|soil contamination}} || Policy || Delhi allows the use of only virgin plastic.<ref name="Urban Environmental Governance"/>
 
|-
 
|-
| 2003 || || {{w|Air pollution}} || Delhi wins the {{w|United States Department of Energy}}'s first 'Clean Cities International Partner of the Year' award for its "bold efforts to curb air pollution and support alternative fuel initiatives".<ref name="cities.expressindia.com">{{cite web|url=http://cities.expressindia.com/fullstory.php?newsid=85665 |title=Express India |publisher=Cities.expressindia.com |accessdate=11 March 2011 |deadurl=yes |archiveurl=https://web.archive.org/web/20101231054504/http://cities.expressindia.com/fullstory.php?newsid=85665 |archivedate=31 December 2010 }}</ref>
+
| 2011 || September || {{w|Air pollution}} || Study || The {{w|World Health Organization}} releases data about urban air. This reveals that Delhi has crossed the maximum PM10 limit by almost 10-times at 198 μg/m3 (micrograms per cubic meter). Emission from vehicle and industrial activities are found to be linked with outdoor as well as indoor air pollution in Delhi.<ref name="Pollution in Delhi : A Chronic Problem">{{cite web |title=Pollution in Delhi : A Chronic Problem |url=https://www.jagranjosh.com/current-affairs/pollution-in-delhi-a-chronic-problem-1510211965-1 |website=jagranjosh.com |accessdate=9 May 2019}}</ref>  
 
|-
 
|-
| 2007 || || {{w|Air pollution}} || Study finds that the conversion of buses from diesel to CNG in Delhi helped reduce {{w|particulates}}, {{w|carbon monoxide}}, and {{w|sulfur oxide}}, while lowering the sulphur content of fuels cut both {{w|sulfur dioxide}} and – due to SO2 converting to sulphates, fine particles (PM10). Another study only identified lower CO as a result of the change to {{w|compressed natural gas}} in Delhi.<ref name="Delhi air quality"/>
+
| 2012 || || {{w|Water pollution}}, {{w|soil contamination}} || Policy || Delhi completely bans all plastic.<ref name="Urban Environmental Governance"/>
 
|-
 
|-
| 2009 || || || Delhi allows the use of only virgin plastic.<ref name="Urban Environmental Governance"/>
+
| 2013 || || {{w|Air pollution}} || || 74 foggy days are reported in the winter months in {{w|Delhi}}.<ref name="Balachandran"/>  
 
|-
 
|-
| 2011 || September || {{w|Air pollution}} || The {{w|World Health Organization}} releases data about urban air. This reveals that Delhi has crossed the maximum PM10 limit by almost 10-times at 198 μg/m3 (micrograms per cubic meter). Emission from vehicle and industrial activities are found to be linked with outdoor as well as indoor air pollution in Delhi.<ref name="Pollution in Delhi : A Chronic Problem">{{cite web |title=Pollution in Delhi : A Chronic Problem |url=https://www.jagranjosh.com/current-affairs/pollution-in-delhi-a-chronic-problem-1510211965-1 |website=jagranjosh.com |accessdate=9 May 2019}}</ref>  
+
| 2013 || January || {{w|Air pollution}}, {{w|water pollution}}, {{w|soil contamination}} || Policy || The High Court of Delhi directs the civic authorities of Delhi to shift the biomedical waste incinerator from the residential area in the city to outside.<ref name="Urban Environmental Governance"/>
 
|-
 
|-
| 2012 || || Policy || Delhi completely bans all plastic.<ref name="Urban Environmental Governance"/>
+
| 2013 || April || {{w|Air pollution}} || Study || Research paper by The Centre for Development Economics at Delhi School of Economics indicates that {{w|Delhi Metro}} helps reduce vehicular {{w|air pollution}}.<ref>{{cite web |title=Delhi Metro helps reduce vehicular air pollution, indicates research |url=https://www.indiatoday.in/india/north/story/delhi-metro-helps-reduce-vehicular-air-pollution-delhi-school-of-economics-160315-2013-04-28 |website=indiatoday.in |accessdate=9 May 2019}}</ref>
 
|-
 
|-
| 2013 || January || Policy || The High Court of Delhi directs the civic authorities of Delhi to shift the biomedical waste incinerator from the residential area in the city to outside.<ref name="Urban Environmental Governance"/>
+
| 2014 || May || General || Study || The World Health Organization announces {{w|New Delhi}} as the most polluted city in the world.<ref>{{Cite news|url = http://qz.com/281251/here-is-why-india-has-no-clue-how-bad-its-air-pollution-problem-is/|title = Here is why India has no clue how bad its air pollution problem is|last = Madhok|first = Madhok|date = 16 October 2014|work = |access-date = 8 May 2019|via = |publisher = Quartz India}}</ref>
 
|-
 
|-
| 2013 || April || {{w|Air pollution}} || Research paper by The Centre for Development Economics at Delhi School of Economics indicates that {{w|Delhi Metro}} helps reduce vehicular {{w|air pollution}}.<ref>{{cite web |title=Delhi Metro helps reduce vehicular air pollution, indicates research |url=https://www.indiatoday.in/india/north/story/delhi-metro-helps-reduce-vehicular-air-pollution-delhi-school-of-economics-160315-2013-04-28 |website=indiatoday.in |accessdate=9 May 2019}}</ref>
+
| 2014 || December || {{w|Air pollution}} || Study || The {{w|Centre for Science and Environment}} classifies the air in Delhi as “severely polluted” for over 65 per cent days.<ref name="Delhi loses 80 lives to air pollution every day, says study"/>      
 
|-
 
|-
| 2014 || May || Statistics || The World Health Organization announces {{w|New Delhi}} as the most polluted city in the world.<ref>{{Cite news|url = http://qz.com/281251/here-is-why-india-has-no-clue-how-bad-its-air-pollution-problem-is/|title = Here is why India has no clue how bad its air pollution problem is|last = Madhok|first = Madhok|date = 16 October 2014|work = |access-date = 8 May 2019|via = |publisher = Quartz India}}</ref>
+
| 2015 || December || {{w|Air pollution}} || Study || Study shows that Delhi loses 80 lives to air pollution every day, or approximately 10,000 to 30,000 annual deaths in the city.<ref name="Delhi loses 80 lives to air pollution every day, says study">{{cite web |title=Delhi loses 80 lives to air pollution every day, says study |url=https://www.downtoearth.org.in/news/delhi-loses-80-lives-to-air-pollution-every-day-says-study-50222 |website=downtoearth.org.in |accessdate=8 May 2019}}</ref><ref>{{cite web |title=Air pollution kills 30,000 in Delhi every year |url=https://www.hindustantimes.com/delhi-news/air-pollution-kills-30k-in-delhi-every-year/story-8V6MbjDh6JC2PifATbSutO.html |website=hindustantimes.com |accessdate=8 May 2019}}</ref>
 
|-
 
|-
| 2014 || December || {{w|Air pollution}} || The {{w|Centre for Science and Environment}} classifies the air in Delhi as “severely polluted” for over 65 per cent days.<ref name="Delhi loses 80 lives to air pollution every day, says study"/>      
+
| 2015 || End of the year || {{w|Air pollution}} || Policy || Severe air pollution in Delhi [[w:National Capital Region (India)|National Capital Region]] leads to a number of Supreme Court rulings, one banning the sale of diesel cars in the area with engine displacements greater than 2.0 L  from January 1 to 1 April 2016.<ref name="Energy Law in India">{{cite book |last1=Naseem |first1=Mohammad |last2=Naseem |first2=Saman |title=Energy Law in India |url=https://books.google.com.ar/books?id=QI2WDwAAQBAJ&pg=PT134&lpg=PT134&dq=%22pollution%22+%22delhi%22+%22in+april%22+%222000..2019%22&source=bl&ots=HBm3yGPNa-&sig=ACfU3U0cevPUsyw24VQTLXHDqUweCN4Qfw&hl=en&sa=X&ved=2ahUKEwje17PEuY_iAhVzK7kGHZbnCjgQ6AEwA3oECAoQAQ#v=onepage&q=%22pollution%22%20%22delhi%22%20%22in%20april%22%20%222000..2019%22&f=false}}</ref>
 
|-
 
|-
| 2015 || December || {{w|Air pollution}} || Study shows that Delhi loses 80 lives to air pollution every day, or approximately 10,000 to 30,000 annual deaths in the city.<ref name="Delhi loses 80 lives to air pollution every day, says study">{{cite web |title=Delhi loses 80 lives to air pollution every day, says study |url=https://www.downtoearth.org.in/news/delhi-loses-80-lives-to-air-pollution-every-day-says-study-50222 |website=downtoearth.org.in |accessdate=8 May 2019}}</ref><ref>{{cite web |title=Air pollution kills 30,000 in Delhi every year |url=https://www.hindustantimes.com/delhi-news/air-pollution-kills-30k-in-delhi-every-year/story-8V6MbjDh6JC2PifATbSutO.html |website=hindustantimes.com |accessdate=8 May 2019}}</ref>
+
| 2016 || November || {{w|Air pollution}} || Crisis || {{w|Air pollution}} in Delhi reaches 16 times above safe levels, and the Delhi government declares an emergency.<ref name="Despite government’s emergency pollution plan, Delhi once again breathed deadly air through winter">{{cite web |title=Despite government’s emergency pollution plan, Delhi once again breathed deadly air through winter |url=https://scroll.in/article/909935/despite-governments-emergency-pollution-plan-delhi-once-again-breathed-deadly-air-through-winter |website=scroll.in |accessdate=8 May 2019}}</ref><ref>{{cite web |title=Indian government declares Delhi air pollution an emergency |url=https://www.theguardian.com/world/2016/nov/06/delhi-air-pollution-closes-schools-for-three-days |website=theguardian.com |accessdate=10 May 2019}}</ref>
 
|-
 
|-
| 2015 || End of the year || {{w|Air pollution}} || Severe air pollution in Delhi [[w:National Capital Region (India)|National Capital Region]] leads to a number of Supreme Court rulings, one banning the sale of diesel cars in the area with engine displacements greater than 2.0 L  from January 1 to 1 April 2016.<ref name="Energy Law in India">{{cite book |last1=Naseem |first1=Mohammad |last2=Naseem |first2=Saman |title=Energy Law in India |url=https://books.google.com.ar/books?id=QI2WDwAAQBAJ&pg=PT134&lpg=PT134&dq=%22pollution%22+%22delhi%22+%22in+april%22+%222000..2019%22&source=bl&ots=HBm3yGPNa-&sig=ACfU3U0cevPUsyw24VQTLXHDqUweCN4Qfw&hl=en&sa=X&ved=2ahUKEwje17PEuY_iAhVzK7kGHZbnCjgQ6AEwA3oECAoQAQ#v=onepage&q=%22pollution%22%20%22delhi%22%20%22in%20april%22%20%222000..2019%22&f=false}}</ref>
+
| 2017 || November || {{w|Air pollution}} || Crisis || A public health emergency is declared by the Indian Medical Association in Delhi as air quality index breached 999, likened to smoking 50 cigarettes a day. Air pollution raises to over 710 micrograms per cubic meter, more than 11 times the World Health Organisation’s safe limit.<ref>{{cite web |title=Toxic Air Is Now A Year-Round Problem For Delhi |url=https://www.bloombergquint.com/politics/toxic-air-is-now-a-year-round-problem-for-delhi-2 |website=bloombergquint.com |accessdate=9 May 2019}}</ref><ref>{{cite web |last1= |first1= |title=Delhi doctors declare pollution emergency as smog chokes city |url=https://www.theguardian.com/world/2017/nov/07/delhi-india-declares-pollution-emergency-as-smog-chokes-city |website=theguardian.com |accessdate=8 May 2019}}</ref><ref>{{cite web |title=Delhi residents panic as 'deadly smog' returns |url=https://www.bbc.com/news/world-asia-india-41896676 |website=bbc.com |accessdate=8 May 2019}}</ref><ref>{{cite web |title=Delhi's air pollution is triggering a health crisis |url=https://www.bbc.com/news/world-asia-india-41925067 |website=bbc.com |accessdate=8 May 2019}}</ref>
 
|-
 
|-
| 2016 || November || {{w|Air pollution}} || {{w|Air pollution}} in Delhi reaches 16 times above safe levels, and the Delhi government declares an emergency.<ref name="Despite government’s emergency pollution plan, Delhi once again breathed deadly air through winter">{{cite web |title=Despite government’s emergency pollution plan, Delhi once again breathed deadly air through winter |url=https://scroll.in/article/909935/despite-governments-emergency-pollution-plan-delhi-once-again-breathed-deadly-air-through-winter |website=scroll.in |accessdate=8 May 2019}}</ref>
+
| 2017 || November 17 || {{w|Air pollution}} || Policy || The government of Delhi launches the odd-even rule in an attempt to reduce pollution in the nation's capital. It is based on the [[w:Odd–even rationing|Odd-Even rationing]] method: This means that cars running with number plates ending in Odd digits could only be driven on certain days of the week, while the Even digit cars could be driven on the remaining days of the week.<ref>{{Cite web|url=https://auto.ndtv.com/news/odd-even-in-delhi-5-things-you-need-to-know-1773720|title=Odd-Even Rule: 5 Things You Need to Know - NDTV CarAndBike|website=CarAndBike|language=English|access-date=24 May 2019}}</ref>
 
|-
 
|-
| 2017 || November || {{w|Air pollution}} || A public health emergency is declared by the Indian Medical Association in Delhi as air quality index breached 999, likened to smoking 50 cigarettes a day. Air pollution raises to over 710 micrograms per cubic meter, more than 11 times the World Health Organisation’s safe limit.<ref>{{cite web |title=Toxic Air Is Now A Year-Round Problem For Delhi |url=https://www.bloombergquint.com/politics/toxic-air-is-now-a-year-round-problem-for-delhi-2 |website=bloombergquint.com |accessdate=9 May 2019}}</ref><ref>{{cite web |last1= |first1= |title=Delhi doctors declare pollution emergency as smog chokes city |url=https://www.theguardian.com/world/2017/nov/07/delhi-india-declares-pollution-emergency-as-smog-chokes-city |website=theguardian.com |accessdate=8 May 2019}}</ref><ref>{{cite web |title=Delhi residents panic as 'deadly smog' returns |url=https://www.bbc.com/news/world-asia-india-41896676 |website=bbc.com |accessdate=8 May 2019}}</ref><ref>{{cite web |title=Delhi's air pollution is triggering a health crisis |url=https://www.bbc.com/news/world-asia-india-41925067 |website=bbc.com |accessdate=8 May 2019}}</ref>
+
| 2017 || November 25 || {{w|Air pollution}} || Policy || The {{w|Supreme Court of India}} bans the sale of {{w|firecracker}}s in Delhi to alleviate pollution.<ref>{{cite news|title=Supreme Court bans sale of firecrackers in Delhi, NCR |url=http://timesofindia.indiatimes.com/home/environment/pollution/SC-bans-sale-of-fire-crackers-in-Delhi-NCR/articleshow/55617850.cms? |accessdate=8 May 2019|work={{w|Times of India}}}}</ref>
 
|-
 
|-
| 2017 || November 25 || {{w|Air pollution}} || The {{w|Supreme Court of India}} bans the sale of {{w|firecracker}}s in Delhi to alleviate pollution.<ref>{{cite news|title=Supreme Court bans sale of firecrackers in Delhi, NCR |url=http://timesofindia.indiatimes.com/home/environment/pollution/SC-bans-sale-of-fire-crackers-in-Delhi-NCR/articleshow/55617850.cms? |accessdate=8 May 2019|work={{w|Times of India}}}}</ref>
+
| 2017 || December || {{w|Air pollution}} || Crisis || During [[w:Sri_Lankan_cricket_team_in_India_in_2017–18#3rd_Test|a test match]] between [[w:Sri Lanka cricket team|Sri Lankan]] and [[w:Indian cricket team|Indian]] cricket teams in New Delhi, Sri Lanka players begin to feel breathing problems and several players vomit both in the rest rooms and in the field and have to use face masks until the end of the match.<ref name="Safi">{{Cite news|url=https://www.theguardian.com/world/2017/dec/03/pollution-stops-play-at-delhi-test-match-as-bowlers-struggle-to-breathe|title=Pollution stops play at Delhi Test match as bowlers struggle to breathe|last=Safi|first=Michael|date=2017-12-03|work=The Guardian|access-date=8 May 2019|language=en-GB|issn=0261-3077}}</ref>
 
|-
 
|-
| 2017 || December || {{w|Air pollution}} || During [[w:Sri_Lankan_cricket_team_in_India_in_2017–18#3rd_Test|a test match]] between [[w:Sri Lanka cricket team|Sri Lankan]] and [[w:Indian cricket team|Indian]] cricket teams in New Delhi, Sri Lanka players begin to feel breathing problems and several players vomit both in the rest rooms and in the field and have to use face masks until the end of the match.<ref name="Safi">{{Cite news|url=https://www.theguardian.com/world/2017/dec/03/pollution-stops-play-at-delhi-test-match-as-bowlers-struggle-to-breathe|title=Pollution stops play at Delhi Test match as bowlers struggle to breathe|last=Safi|first=Michael|date=2017-12-03|work=The Guardian|access-date=8 May 2019|language=en-GB|issn=0261-3077}}</ref>
+
| 2018 – 2019 || November 1 2018 – January 6 2019 || {{w|Air pollution}} || Policy || According to report, toxic levels of air pollution monitored over Delhi almost every week during the period shows that the government’s emergency plans to tackle the city’s annual crisis have failed.<ref name="Despite government’s emergency pollution plan, Delhi once again breathed deadly air through winter"/>
 
|-
 
|-
| 2018 – 2019 || November 2018 – January 2019 || {{w|Air pollution}} || "Toxic levels of air pollution monitored over Delhi almost every week from November 1 last year to January 6 showed that the government’s emergency plans to tackle the city’s annual crisis have failed, said a report of United Residents Joint Action or URJA, a collective of the city’s resident welfare associations."<ref name="Despite government’s emergency pollution plan, Delhi once again breathed deadly air through winter"/>
+
| 2019 || March || {{w|Air pollution}} || Study || Study published in journal ''{{w|Nature Sustainability}}'' shows that high levels of air pollution in New Delhi during the fall and winter months are largely the result of post-harvest burning of crop residue. Pollution levels from crop burning are so high they rival fossil fuel emissions during peak summer months. The findings contradict the widespread notion that the emission flux between cities and the countryside is mainly one-way, and that the main source of pollution in a megacity is expected to be traffic.<ref>{{cite web |title=Burning Crops Are a Top Source of Air Pollution in India, Study Finds |url=https://e360.yale.edu/digest/burning-crops-are-a-top-source-of-air-pollution-in-india-study-finds?fbclid=IwAR2d_bY--LpvhhhGUIRxsFY5RMtlGBJuKeqQoK5k5K8hDsJ0pP1n5c6FpKo |website=e360.yale.edu |accessdate=15 May 2019}}</ref>
 
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* [[Timeline of pollution]]
 
* [[Timeline of pollution]]
 +
* [[Timeline of pollution in India]]
 +
* [[Timeline of pollution in China]]
 
* [[Timeline of pollution in Beijing]]
 
* [[Timeline of pollution in Beijing]]
 
* [[Timeline of waste management]]
 
* [[Timeline of waste management]]

Revision as of 16:38, 12 June 2019

This is a timeline of pollution in Delhi, which is ranked the highest in the world.[1] Delhi suffers severe levels of air pollution, most of which comes from diesel-burning trucks and buses.[2]

Big picture

Time period Development summary
1980s The issue of air and water pollution in Delhi enters the Supreme Court's agenda in the late decade, and periodic statements and orders are issued from the bench.[3]
1990s Delhi reaches among the world's worst urban level of air quality. Air pollution's heavy impacts on human health, including infant mortality and asthma, leads to sustained efforts for improvement by Indian civil society.[4] Several small and medium-size industries are relocated from Delhi as a measure to control pollution.[5]
2000s Till mid-decade, busy Central and South Delhi areas are high air pollution zones. From then on, dirty air would spread to even cleaner residential areas.[6]
2010s Emergency plans to tackle the city’s annual crisis are reported to have failed in the last years.[7] Delhi’s pollution levels reach high enough to affect the respiratory and cardiac systems of even healthy people. [7] The city ranks among the most polluted in the world.

Full timeline

Year Month and date Pollution type Type of event Details
1947 Air pollution India becomes an independent state. At the time, fog in Delhi is rather rare.[8]
1950–1951 December–February Air pollution Only one foggy day is reported in the winter months in the city.[8]
1955 Water pollution Crisis Sewage and industrial wastes from the Najafgarh drain cause a famous jaundice episode in Delhi. The Najafgarh drain comes to be known as "sorrow of Delhi"[9]
1974 Water pollution Policy The Central Pollution Control Board is set up under the Water Act.[10]
1982 General Policy Delhi passes its first Industrial Policy.[10]
1985 Air pollution Policy The Supreme Court of India states verdict to deal with the chronic problem of vehicular pollution in Delhi, one of the earliest stand taken by judiciary.[10]
1987 Air pollution Study A survey estimates that 1172 tonnes of suspended particulate matter, hydrocarbons, sulphur dioxide, nitrogen oxides, carbon monoxide and other poisonous gases are spewed into the air in Delhi by industrial units, the various modes of transport and the power sector.[11]
1990 – 2001 General Policy A Master Plan of Delhi allows for "light" industry to be set up in residential areas. This creates a leeway for many industries which are not in the hazardous category (H) to start in the areas vacated by the "H" category industries without the necessity for any permission from the Delhi Pollution Control Committee.[12]
1993 – 2000 Light pollution Study Author Pavan Kumar says New Delhi, along with Telangana, Maharashtra, Karnataka and Uttar Pradesh experienced increase in “very high light pollution intensity” in the period.[13]
1994 Water pollution Policy The Supreme Court takes suo motu notice of a newspaper report about the pollution of the Yamuna.[3]
1995 General Policy The Supreme Court of India asks the Delhi Pollution Control Committee to categorize all industrial units in the city according to pollution hazard they pose.[14]
1995 Air pollution Policy Delhi government introduces catalytic converter in passenger cars as vehicle control measure policy to curb air pollution in the city.[10]
1996 Air pollution 46 foggy days are reported in the winter months in Delhi.[8]
1996 February Water pollution Policy The Supreme Court of India orders the Delhi state government to construct common effluent treatment plants, which the industries are required to pay for, to reduce water pollution.[14]
1996 April General Policy The Supreme Court of India orders the relocation of factories away from residential areas.[14]
1997 Air pollution Study The annual suspended particulate matter average concentration in Delhi is 339.3 microgrammes per cubic meter.[11]
1998 Air pollution Policy The Supreme Court of India orders a major transformation of Delhi's transportation system, in response to a public interest petition on air pollution.[14]
1998 Air pollution Policy Delhi government introduces unleaded petrol as vehicle control measure policy to curb air pollution in the city.[10]
2000 Air pollution Policy Delhi government introduces reduction of benzene content in fuels and reduction of sulfur content in diesel as vehicle control measure policy to curb air pollution in the city.[10]
2003 General Policy After Supreme Court order on hazardous waste, stringent actions are prompted by various State Pollution Control Board in Delhi.[12]
2003 Air pollution Delhi wins the United States Department of Energy's first 'Clean Cities International Partner of the Year' award for its "bold efforts to curb air pollution and support alternative fuel initiatives".[15]
2007 Air pollution Study Study finds that the conversion of buses from diesel to CNG in Delhi helped reduce particulates, carbon monoxide, and sulfur oxide, while lowering the sulphur content of fuels cut both sulfur dioxide and – due to SO2 converting to sulphates, fine particles (PM10). Another study only identified lower CO as a result of the change to compressed natural gas in Delhi.[4]
2009 Water pollution, soil contamination Policy Delhi allows the use of only virgin plastic.[12]
2011 September Air pollution Study The World Health Organization releases data about urban air. This reveals that Delhi has crossed the maximum PM10 limit by almost 10-times at 198 μg/m3 (micrograms per cubic meter). Emission from vehicle and industrial activities are found to be linked with outdoor as well as indoor air pollution in Delhi.[10]
2012 Water pollution, soil contamination Policy Delhi completely bans all plastic.[12]
2013 Air pollution 74 foggy days are reported in the winter months in Delhi.[8]
2013 January Air pollution, water pollution, soil contamination Policy The High Court of Delhi directs the civic authorities of Delhi to shift the biomedical waste incinerator from the residential area in the city to outside.[12]
2013 April Air pollution Study Research paper by The Centre for Development Economics at Delhi School of Economics indicates that Delhi Metro helps reduce vehicular air pollution.[16]
2014 May General Study The World Health Organization announces New Delhi as the most polluted city in the world.[17]
2014 December Air pollution Study The Centre for Science and Environment classifies the air in Delhi as “severely polluted” for over 65 per cent days.[18]
2015 December Air pollution Study Study shows that Delhi loses 80 lives to air pollution every day, or approximately 10,000 to 30,000 annual deaths in the city.[18][19]
2015 End of the year Air pollution Policy Severe air pollution in Delhi National Capital Region leads to a number of Supreme Court rulings, one banning the sale of diesel cars in the area with engine displacements greater than 2.0 L from January 1 to 1 April 2016.[20]
2016 November Air pollution Crisis Air pollution in Delhi reaches 16 times above safe levels, and the Delhi government declares an emergency.[7][21]
2017 November Air pollution Crisis A public health emergency is declared by the Indian Medical Association in Delhi as air quality index breached 999, likened to smoking 50 cigarettes a day. Air pollution raises to over 710 micrograms per cubic meter, more than 11 times the World Health Organisation’s safe limit.[22][23][24][25]
2017 November 17 Air pollution Policy The government of Delhi launches the odd-even rule in an attempt to reduce pollution in the nation's capital. It is based on the Odd-Even rationing method: This means that cars running with number plates ending in Odd digits could only be driven on certain days of the week, while the Even digit cars could be driven on the remaining days of the week.[26]
2017 November 25 Air pollution Policy The Supreme Court of India bans the sale of firecrackers in Delhi to alleviate pollution.[27]
2017 December Air pollution Crisis During a test match between Sri Lankan and Indian cricket teams in New Delhi, Sri Lanka players begin to feel breathing problems and several players vomit both in the rest rooms and in the field and have to use face masks until the end of the match.[28]
2018 – 2019 November 1 2018 – January 6 2019 Air pollution Policy According to report, toxic levels of air pollution monitored over Delhi almost every week during the period shows that the government’s emergency plans to tackle the city’s annual crisis have failed.[7]
2019 March Air pollution Study Study published in journal Nature Sustainability shows that high levels of air pollution in New Delhi during the fall and winter months are largely the result of post-harvest burning of crop residue. Pollution levels from crop burning are so high they rival fossil fuel emissions during peak summer months. The findings contradict the widespread notion that the emission flux between cities and the countryside is mainly one-way, and that the main source of pollution in a megacity is expected to be traffic.[29]

Meta information on the timeline

How the timeline was built

The initial version of the timeline was written by User:Sebastian.

Funding information for this timeline is available.

Feedback and comments

Feedback for the timeline can be provided at the following places:

  • FIXME

What the timeline is still missing

Timeline update strategy

See also

External links

References

  1. "India takes steps to curb air pollution". who.int. Retrieved 10 May 2019. 
  2. "Where Is the Worst Air in the World?". slate.com. Retrieved 10 May 2019. 
  3. 3.0 3.1 Bauer, Joanne R. Forging Environmentalism: Justice, Livelihood, and Contested Environments: Justice, Livelihood, and Contested Environments. 
  4. 4.0 4.1 "Delhi air quality". panda.org. Retrieved 9 May 2019. 
  5. "Delhi lacks long-term plan to check industrial pollution". hindustantimes.com. Retrieved 10 May 2019. 
  6. Chauhan, Chetan. "Delhi cold brings pollution, illness". hindustantimes.com. Retrieved 10 May 2019. 
  7. 7.0 7.1 7.2 7.3 "Despite government's emergency pollution plan, Delhi once again breathed deadly air through winter". scroll.in. Retrieved 8 May 2019. 
  8. 8.0 8.1 8.2 8.3 Balachandran, Manu; Thomas, Maria. "Delhi's air is so toxic that schools are closing, expats are fleeing, and the visiting UK PM could lose hours from her life". qz.com. Retrieved 12 June 2019. 
  9. Agarwal, S. K. Water Pollution. 
  10. 10.0 10.1 10.2 10.3 10.4 10.5 10.6 "Pollution in Delhi : A Chronic Problem". jagranjosh.com. Retrieved 9 May 2019. 
  11. 11.0 11.1 Agarwal, S. K. Air Pollution. 
  12. 12.0 12.1 12.2 12.3 12.4 Raju, K.V.; Ravindra, A.; Manasi, S.; Smitha, K.C.; Srinivas, Ravindra. Urban Environmental Governance in India: Browsing Bengaluru. 
  13. "Not just air, light pollution too is on the rise in India". scroll.in. Retrieved 8 May 2019. 
  14. 14.0 14.1 14.2 14.3 Bauer, Joanne R. Forging Environmentalism: Justice, Livelihood, and Contested Environments. 
  15. "Express India". Cities.expressindia.com. Archived from the original on 31 December 2010. Retrieved 11 March 2011. 
  16. "Delhi Metro helps reduce vehicular air pollution, indicates research". indiatoday.in. Retrieved 9 May 2019. 
  17. Madhok, Madhok (16 October 2014). "Here is why India has no clue how bad its air pollution problem is". Quartz India. Retrieved 8 May 2019. 
  18. 18.0 18.1 "Delhi loses 80 lives to air pollution every day, says study". downtoearth.org.in. Retrieved 8 May 2019. 
  19. "Air pollution kills 30,000 in Delhi every year". hindustantimes.com. Retrieved 8 May 2019. 
  20. Naseem, Mohammad; Naseem, Saman. Energy Law in India. 
  21. "Indian government declares Delhi air pollution an emergency". theguardian.com. Retrieved 10 May 2019. 
  22. "Toxic Air Is Now A Year-Round Problem For Delhi". bloombergquint.com. Retrieved 9 May 2019. 
  23. "Delhi doctors declare pollution emergency as smog chokes city". theguardian.com. Retrieved 8 May 2019. 
  24. "Delhi residents panic as 'deadly smog' returns". bbc.com. Retrieved 8 May 2019. 
  25. "Delhi's air pollution is triggering a health crisis". bbc.com. Retrieved 8 May 2019. 
  26. "Odd-Even Rule: 5 Things You Need to Know - NDTV CarAndBike". CarAndBike. Retrieved 24 May 2019. 
  27. "Supreme Court bans sale of firecrackers in Delhi, NCR". Times of India. Retrieved 8 May 2019. 
  28. Safi, Michael (2017-12-03). "Pollution stops play at Delhi Test match as bowlers struggle to breathe". The Guardian. ISSN 0261-3077. Retrieved 8 May 2019. 
  29. "Burning Crops Are a Top Source of Air Pollution in India, Study Finds". e360.yale.edu. Retrieved 15 May 2019.