Feature

Front Matter

Spot Larger than Earth Breaks out on Saturn

Moving to Better Lands Seen as Resettling of America

Heavy Water Prevents Seeds from Sprouting

New Determination Sets Greatest Solar Heat

Frogs Reared in Dye Become Albinos

Iron Blade Found Millenium Older than Iron Age

Map Shows Sixty Dialects of Mexico

Little Tragedies of Childhood

In Science Fields

Artificial Blood in Dogs Shows Red Cells Guard Hemoglobin

Crop Limitation Saved Colonial Tobacco Planters