Things that make us dumber: air pollution, full bladders

Air pollution is making us dumber, study shows:

The team found that both verbal and math scores “decreased with increasing cumulative air pollution exposure,” with the decline in verbal scores being particularly pronounced among older, less educated men.

Study links urge to pee with impairment:

Snyder and his team ran the study on eight individuals, who each drank 250 milliliters of water every 15 minutes until they reached their “breaking point,” where they could no longer hold their urine. As subjects’ self-reported pain levels increased, so too did their levels of cognitive impairment as measured by simple tasks on the computer that tested attention and working memory.