In the time it takes to type this sentence, I will have taken three breaths. Twelve in a minute, 20,000 a day, 7.5 million a year, most of them indoors. Yet until quite recently, researchers have not ...

We regularly answer frequently asked questions about life during the coronavirus crisis. If you have a question you'd like us to consider for a future post, email us at goatsandsoda@npr.org with the ...

People complain about fan noise in their computers. The same applies to active cooling on high-power LED arrays. It's not CFM (cubic feet per minute) that counts, but the linear air velocity at the ...

How does a mass air flow sensor work? What is a MAF sensor? This video explains how a hot wire type mass air flow sensor ...