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“As the national capital and surrounding areas gasp under a thick pall of smog, sales of indoor air purifiers have zoomed, here’s an examination of the various questions around these machines…”  The Indian Express asks air quality experts (including Dr Joshua Apte of the Department of Civil, Architectural and Environmental Engineering at the University of Texas at Austin, Prof Jeffrey Siegel of the Department of Civil Engineering at the University of Toronto, and Dr T K Joshi, director of Centre for Occupational and Environmental Health at Delhi’s Maulana Azad Medical College) their opinions regarding the technology, effectiveness, and health impact of air purifiers. The Indian Express. Read it on

Clearing the air: Air purifiers may have benefits, but cutting pollution holds key