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Steps to Control Polio

Animal and Bacterial Life Found in Ocean’s Depths

New Stoplight Protects Motorists on Sharp Curve

Nucleic Acid Isolated

Fluoridated Salt Next

Muriel, Talking Monkey, Has 50-Word Vocabulary

[Photograph]: Flying Boxcar Improved

Atomic Bombardment Changes Hemp’s Sex Ratio

Cigarette Smoking and Stomach Ulcers Linked

Cancer Forecast for 1975

New Anti-Rheumatism Chemical from Switzerland

Feed Spuds to Sheep for More and Thicker Wool