CO2、認知、通風，以及如何真正改善一間爛房間。不灌水。
There are two types of CO2 sensors in monitors. One directly measures CO2. The other guesses from VOCs. Here is what that actually means, and why it matters.
閱讀 →Which CO2 monitor should you actually buy? The one rule that matters, the picks by budget, and the cheap ones to avoid.
閱讀 →The afternoon crash in a packed meeting room usually is not the people, the lunch, or the Monday. It is the CO2.
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