CDC study shows schools that used HEPA filters in the classroom had significantly lower covid-19 infection rates

CDC Study: HEPA Filters Reduce COVID-19 Spread in Schools

There has been little dispute that HEPA filters are extremely effective at removing virus and COVID-19 sized particles from the air. However, what has been less known is whether or not HEPA filters can actually reduce the transmission of COVID-19 in the real world. Now, thanks to a new CDC …

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How Many Trees Need to Be Planted to Solve Delhi’s Air Pollution?

When Delhi’s air pollution spikes, netizens in the nation’s capital often bring up the solution of planting trees. For instance, this user on the question-answer site Quora asks “how many trees does Delhi need to combat its air pollution problem?” However, environmental research suggests that planting trees are an incredibly …

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Wildfire Smoke Made This U.S. City the Most Polluted

This beautiful city in the picture is Eugene, Oregon. Known for its Willamette Valley and the founding of athletic shoe giant Nike, it also had America’s worst air quality in 2022, according to the latest data from the Environmental Protection Agency.  How Bad Was the Worst Day of The Year …

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Top 10 Most Polluted Cities in Germany (2024 Rankings)

Smart Air has identified the “10 Most Polluted Cities in Germany” based on 2024 data. If you’re in Germany and concerned about air quality, this article is for you! Scroll down to see the complete list of Germany’s most polluted cities, along with their annual PM2.5 levels in micrograms per …

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Smart Air is a social enterprise and certified B Corp that offers simple, no-nonsense air purifiers and provides free education to protect people from the harms of air pollution.

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