A small body of evidence suggests that when it comes to decision making, indoor air may matter more than we have realised. Veronique Greenwood of The New York Times reports.

You're holed up with colleagues in a meeting room for two hours, hashing out a plan. Risks are weighed, decisions are made. Then, as you emerge, you realise it was much, much warmer and stuffier in there than in the rest of the office.

Small rooms can build up heat and carbon dioxide from our breath — as well as other substances — to an extent that might surprise you.

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