This air quality monitor is a cute bird that dies when you need to air out your home

Birdie has a simple tag line: “Dead bird: open your window.” Harsh, but clear. Like the coal mine canaries of yore, Birdie collapses when air quality drops and revives when it improves.

In Germany, Lüften, regularly opening windows for short periods, regardless of the season or outside temperature, is common, as it improves indoor air quality and sleep, …