Plausibly Exogenous [1928] - Air Pollution (05/14/2025)

LHS Variable
GDP

RHS Variable
Air pollution

Source of Exogenous Variation
Natural experiment in India created by groundwater-conservation mandates in two northern states, which shifted crop-residue fires from October into November, when cool air and calm winds trap particulate matter.

- Tiwari (2025), “The Effect of Air Pollution on GDP: Evidence from a Natural Experiment in India”