Feature

Cosmic Rays from Sun? Chicago Tests to Tell

Books of the Week

How Octupus Learns Is Clue to How Man Learns

New Machines and Gadgets

Front Matter

Scientists to Be Drafted?

Korea, Oft Invaded, Was Cultural Bridge

Two Modern Drugs Fail in Polio

War Weapons in Korea

Missile Models Give Data of 6,000-Mile Speed

Say “Fishing” to Use All Speech Sources in Mouth

Giant Brains Shrink