Feature

Luminous Night Skies Caused by Cosmic Dust

Quakes Most Frequent at Night and in Winter

Machine, Not Horse, Will Make Kings of Tomorrow

First Glances at New Books

Grand Coulee or Boulder Dam: Which Holds Honors for Size?

White “Witch Doctors” Scorned as Illogical

Why Is a Crooner? Science Seeks Answer

Discovery of Lizard-Eating Spiders Reported in India

Three-Inch Thick Quartz Windows for Bathysphere

Front Matter

In Science Fields

Relativity Yields Formula Good for Many Machines