A researcher cited in this article recommends that people at risk of heart attack should avoid exercising outdoors on highly polluted days. What an odd conclusion, on two counts: First, that avoidance, instead of elimination of the poison from the air we breathe, is the recommended course of action; and second, that only “at risk” people need take any special action regarding diesel pollution.
George Cammarota San Jose, Calif.
From the Nature Index
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