Feature

New Instrument Maps Shoal Bottoms Rapidly, Accurately

Meteorite Explosion May Have Formed Meteor Crater

Peru Restricts Exports of Rotenone Plants

New Kind of Ether Acts Faster; Recovery Is Easier

Seals Unearthed at Rayy Shed Light on Persian Past

Survey Changes in Quality of America’s Population

Dancing-Dwarf Mechanical Toy Found in Egyptian Tomb

Medical Movie of Stomach Forerunner of Film Cartoon

In Science Fields

Is Man Doomed to Extinction?

Reflectors like Airplane Detectors Catch Bird Songs

Advises Reducing Sugar in Diet to Avoid Tooth Decay