Maybe i missed some words in the article, but I don't see it say when they figured this out. Because it's been at least a decade since I learned about it in school or from a science magazine at school.

Have people been going around not knowing about this until now?

Or is it that only now can they say with certainty this is true?

[–] [email protected] 16 points 4 months ago (1 children)

It was always my understanding that they detected carbon dioxide we exhaled. This is the first I've heard about infrared.

[–] SandLight 13 points 4 months ago

When I worked for the county doing mosquito control about 15 years ago, I was told they did both.

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