Feature

Universe Seems to Throb Slowly, like a Giant Heart

High Voltage Neutrons May Be Most Effective Atom Splitters

Mexican Clay Horses Recall Spanish Conquest

Celebrate Publication of Famous Digestive Study

Front Matter

Saturn Rules October Evening Skies

Chemist Promises a Longer, More Virile Life to Mankind

Radiology Vital to Public Health of Nation

Insects Use Many Devices to Live through Winter

New Sign in Mayan Writing Deciphered

X-Rays Measure Interatomic Distances in Molecules

Swamp Plants Grow Better When Roots Get Oxygen