Feature

Whirlybirds Get “Claws”

Blood Clots Prevented in Broken Hip Patients

Violence Not Surprising

Bacilli Readied for Heat Death by Active Enzyme

Cancer Clue Found

Doctors Are Reading

Civilians Run Army’s Only Aircraft Repair Ship

Helium Spotted by Radio

Schools, Parents Included in Anti-Smoking Program

Front Matter

Psychologists Speak Out

New Undersea Features Revealed in Study