https://medium.com/the-fourth-wave/cheap-sensors-are-democratizing-air-quality-data-e89c90b2c4b2

This is an article by Jason Plautz that originally ran in CityLab. You can read the entire article here. We love it so much we wanted to give our readers an excerpt.

Until she moved to Fresno, California in 2003, Janet DietzKamei had never experienced asthma. But after just a few years in a city notorious for its filthy air — the American Lung Association lists it in the five worst U.S. cities for air quality — DietzKamei found herself in the emergency room struggling to breathe.