Feature

Nuclear Test Waves Detected Many Times

A-Bombs No Help to World Security

[Photograph]: Three Times as Bright as Sun

All Cancer Tied to DNA

Automatic System Sends Pilots to Intercept

Chimps May Outdo Man

Insect Preservation Allows More Field Work

Front Matter

Top Science Test Begins

Female Voice Has Flaws for Routine Broadcasting

Suburban Growth Makes More Water Problems

New Ideas and Gadgets