Medicine: How to Fight Radicals

Los Angeles came down last week with the worst case of that chronic big-city ailment, smog. Though usually its immediate effects are only smarting eyes and sore throats, smog can have serious indirect consequences, including traffic accidents, respiratory trouble, possible (though not proved) influence on lung cancer. Scientists measure the strength of a smog bout by the amount of ozone in the air. If the ozone count ever reaches 1.5 parts per million, public health officials fear disaster. The Los Angeles smog last week reached 0.90. California's Governor Goodwin Knight stood ready to declare the city a disaster area, and to...

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