Feature

Light’s Speed Decreasing?

Front Matter

Early Man in America

Cold Increases Immunity

Man Eats Little of Total

Classics of Science: Induction of Electric Currents

Tattoo Marks Yield to Chemical Treatment

Building and Flying Model Airplanes: Making the Propellers of SS-2

Back Matter

Nature Ramblings: Wisent

Largest Petroglyph

First Glances at New Books