Most people don’t think about air quality until it becomes a problem. It might not be random if you’ve ever felt sluggish in a home office or noticed your allergies acting up indoors. CO2 levels, ...

I picked up an Amprobe CO2-100 meter the other day (Fluke subsidiary). It's a professional grade, high accuracy, low-drift tool that I can use for research. Physical concepts like this haven't changed ...