Make: Volume 78

room. They can help inform behavior patterns

so that teachers, for instance, might understand

when to open windows and doors and how long

they need to stay open.

That’s what makes building a CO

2

device such

an interesting application. It’s not just about

gathering data but it’s about detecting patterns

of CO

2

levels indoors, and using messages that

help people respond by improving the ventilation

— and the health of the people — in the room.

Is CO

2

Slowing You Down?

Higher CO

2

levels are known to impair cognition,

another reason for keeping track of it indoors.

Because we humans can’t detect carbon dioxide

(CO

2

) or its more deadly cousin carbon ...