Sophia Decherney
Contributor
Sophia Decherney is a freelance writer at Encyclopædia Britannica. She is expected to graduate from Brown University in 2025 with bachelor’s degrees in Philosophy and Literary Arts. She has further interests in horticulture, legal history, and technical theatre and is currently serving as the president of Brown’s literary society.
Primary Contributions (15)
Air quality index (AQI), an online, color-coded index created by the U.S. Environmental Protection Agency (EPA) that communicates whether the relative air quality and air pollution level in a given area is healthy or unhealthy. Maps of local AQI values are updated every 8 or 24 hours, depending on…
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