Decades ago, as a college student, I made a cross-country trip during summer break in a beat-up jalopy without air-conditioning. Unfortunately, opening all the windows while driving on the freeway ...

I recently got a chance to design a simple device to monitor air flow in a vent. I was foiled, as the proposal demands a cheap model based on a common PC cooling fan as the air flow sensor. Although ...

Plume Labs unveiled its Flow air-quality tracker last week at CES 2017, the big tech trade show in Las Vegas. It is one of many air-quality trackers, but this one has an interesting twist. Above: ...