Feature

Tranquilizer Raises Effects of Alcohol

New Machines and Gadgets

Polio Vaccine by Mouth Ready for Use in 1961

Origin Theories May Be Upset by Liverwort

Million Billion Years Old

Plastic Blood Filter Helps Open-Heart Surgery

Radiation Investigation

Red Cross to Aid School-Age Chileans

Front Matter

Origin of the Scientist

Collision of Shock Waves 80 Times Sound’s Speed

Malaria Still a Problem