Common environmental noise levels

How loud is too loud? Continued exposure to noise above 85 dBA (adjusted decibels) over time will cause hearing loss. The volume (dBA) and the length of exposure to the sound will tell you how harmful the noise is. In general, the louder the noise, the less time required before hearing loss will occur. According

The impact of noise on childhood cognitive development

Poor classroom acoustics: The invisible reason Johnny can’t read. Poor classroom acoustics create a negative learning environment for many students, especially those with hearing or learning difficulties. According to a report by David Lubman (“America’s Need for Standards and Guidelines to Ensure Satisfactory Classroom Acoustics”) “acoustical conditions in many classrooms are unsuitable for such tasks

Letter to electeds on the importance of data collection

This letter is in support of a legislative proposal we have made concerning air quality monitors around Sea-Tac Airport. Senator Keiser, Rep. Orwall, Rep. Johnson. I know how busy you all are. I hope you will take 4 minutes to listen to this very good piece of audio. You can start at about 1:40. https://seatacnoise.info/otm111320_cms1067654_pod/

Huffington Post: Data Disappeared

Whenever President Donald Trump is questioned about why the United States has nearly three times more coronavirus cases than the entire European Union, or why hundreds of Americans are still dying every day, he whips out one standard comment. We find so many cases, he contends, because we test so many people. The remark typifies