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Judgement of the National Green Tribunal in the matter of Harvinder Sekhon Vs. Union of India & Others dated 14/09/2017 regarding banning of 10 year old diesel vehicles in Delhi NCR. The sum and substance of the case is that the scientific reports of IIT Kanpur, the DPCC and CRRI Report of 2002 brings to surface the ill-effects of fossil fuel as compared to diesel emission on the ambient air quality.