Feature

Chemicals Can Prevent Spread of Cancer Cells

Books of the Week

A/C Motor Has Smooth Speed Control

Restricted Environment Cuts Food, Water Intake

Space Program Outlined

Insect Phobias Need Care

Use Clay in Arthritis Test

Front Matter

[Photograph]: Flexible Rails

Twin Calf Study Shows Tastes Can Be Inherited

Atomic Samples Added

New Machines and Gadgets