Feature

Male Horses Speedier than Mares and Fillies

Nature Ramblings: Drought and the Ten Plagues

Designers Borrow Patterns from Ancient America

Drought Menaces Irrigation Areas East of Rockies

Cosmic Rays Not Likely to Be Future Power Source

Back Matter

Sun’s Probable Age Ten Million Million Years

Not “Going to Prairie-Dogs” Drought Cycles an Old Story

All-Metal Airplanes Not in Danger from Lightning

Dust Storms “Make Air Blue” by Light-Scattering Effect

In Science Fields

Raise Pot Lid, Find Dinner Left on Stove 6,000 Years