Science Past from the issue of July 28, 1962

By Science News, 13:40 PM July 12, 2012

BATTLE AGAINST EXHAUST POLLUTION — The automobile exhaust problem is being attacked from many directions in an effort to preserve man’s most necessary commodity, air.... In response to regulations by local and state governments and prodding from the Federal Government, several exhaust-trapping devices for cars have come on the market, none of which controls all of the poisonous gases emitted during combustion. One, the “blow-by” or crankcase ventilation system, has received Federal approval ...

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