Feature

Dogs Recognize Words by Their Sound Alone

Front Matter

Nature Ramblings: Drought Records

Citric, the Acid of Lemons, Found Now in Tobacco

Balloons Carrying Radios Tell Stratosphere Secrets

[Photograph]: Strange Fruits on a Willow Tree

Stromboli Is “Safe” Volcano Because of Its Eruptions

Need Negative Proton to Explain Spin of Atom Nucleus

No Crop Shortage in Northwestern Tree Seeds

Over-Production of Crude Oil May Exhaust Supply

Blonde, Nordic Mothers Are Likeliest to Have Twins

Time Required for Travel of Radio Signals Varies at Night