My primary research involvement has been in the area of air pollution and health and chemical risk assessment. I have designed and conducted large scale field studies concerning the household, ambient and occupational environment across multiple states in India, including monitoring and evaluation of intervention efforts. Recently, I have been engaged in the conduct of mother-child cohort studies as well multi-country randomized control trials to strengthen the evidence for efficacy of air pollution interventions on birth/early childhood and adult cardio-vascular outcomes