Feature

Maya Indians Have Better Teeth than College Girls

[Photograph]: One Part in a Trillion

Scientists Work to Freshen Stale Air with Electricity

Exact Reproduction Not Goal of Ancient Greek Sculptors

Sunspots and Tree Rings Prove Aid to Engineer

George Washington, Experimental Farmer: “A Classic of Science”

In Science Fields

Every Snowflake a Unique Jewel

[Illustration]: The Great Warrior

Streamline Type Challenge to Automobile Makers

Fundamental Fact Discovered in Study of Root Disease

Photographs Record High Speeds of Atomic Hearts