Wild fire smoke, East Rim, Steens Mountain, Oregon

Why We’re Stupid: Another Reason


Researchers in China have meticulously documented a reason for diminished cognition – stupidity – in old men: bad air. Seriously. Air pollution, including the PM 2.5 fine particulates, has been shown to impair cognition, especially in the elderly. We find that long-term exposure to air pollution impedes cognitive performance in verbal and math tests. We…