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Citizen scientists tracking Chicago air quality : Volunteers using new tech to help monitor pollution

Nov 12, 2017 - Chicago Tribune

With an array of palm-sized devices strapped across her chest and connected wirelessly to her smartphone, Gail Merritt discovered the air in the South Loop might be a lot dirtier than expected.

Merritt and her group of volunteer pollution hunters had assumed the low-cost sensors they carried during daily walks would confirm their fast-growing neighborhood had relatively decent air quality, at least when compared with the gritty industrial corridors in other parts of Chicago.