Feature

Detecting Ills by Sound

Age of Atlantic Ocean Is Half Billion Years

Air Chemically Same 42 Miles above Earth

Polio Immunity Temporary

Electronic Brains Must Be Told What to Think

Servicemen Have Changed

New Blood Pressure Ill

Front Matter

Cancer in Mentally Ill

Water Fog Effective as Fire Extinguisher

New Machines and Gadgets

Ocean Water Penetrating Underground in California