Feature

[Photograph]: For Safety

Wisconsin Trades Beavers for Illinois’ Turkeys

In Science Fields

Columbia Professor Solves 2,000 Year Old Math Problem

Bones Continue to Change after Adulthood Is Reached

Unique Case of Inverted Stomach Is Described

Nature Ramblings: Repairs and Replacements

Front Matter

Driver’s Own Reflex Act Throws Car “Out of Control”

Take Step toward Better Spotted Fever Vaccine

Cosmic Rays Show Earth’s Magnetic Field Is Lopsided

Giant Salt Container Holds Twenty-Five Tons