Feature

Bigger Crops Possible

High-Power Auto Engines

Cheap Leprosy Treatment

Intelligence Raised When Half of Brain Removed

Playing Card Holder Gets U. S. Patent

Love Prevents Breakdowns

Nature Ramblings: Cocoons

Pre-School Check-up

Hint for Polio Vaccine

Front Matter

[Photograph]: Spiral Stair for Lightning

Radioactive Atoms Show Food Moving in Sugar Cane