“Pune/Mumbai: The Automotive Research Association of India (Arai) and The Energy and Resources Institute (Teri) are conducting an ambient air quality study to identify sources of pollution in Delhi and the National Capital Region (NCR).
Commissioned by the ministry of heavy industries last year, the study, expected to be concluded by August, is the first-of-its-kind in terms of scope and takes into account sources of pollution not just in Delhi but the entire NCR.”

Read it on Delhiair.org:
Arai, Teri study ambient air quality in Delhi and NCR