Elevated carbon dioxide may impair reasoning

Insufficient ventilation allows exhaled gas to build up indoors, diminishing decision-making abilities

By Janet Raloff, 11:32 AM October 16, 2012

Carbon dioxide has been vilified for decades as a driver of global warming. A new study finds signs that CO2, exhaled in every breath, can exert an equally worrisome threat — impaired cognition — in nearly every energy-efficient classroom, meeting hall or office space.

The work assessed decision-making in 22 healthy young adults. Their performance on six of nine tests dropped notably when researchers raised indoor carbon dioxide levels to 1,000 parts per million from a baseline of 600 ppm. On ...

Source URL: https://www.sciencenews.org/article/elevated-carbon-dioxide-may-impair-reasoning