Feature

Cancer Forecast for 1975

Atomic Bombardment Changes Hemp’s Sex Ratio

Transfusions of Platelets

Scientist Explains How Worm Gets inside Ear of Corn

[Photograph]: Flying Boxcar Improved

Nature Ramblings: Trillium

New Medium Tank

New Anti-Rheumatism Chemical from Switzerland

Pint-Size Motor Packs Powerful Punch

Atomic Energy Information

Front Matter

Humidity Extremes Affect Vitamin Needs