Feature

Cats Have Two Kinds of Sight; Brain Cortex Needed for One

Solar System Unstable after Great Lapses of Time

Pioneer in Lung Surgery Wins Trudeau Medal

Farewell Photo of Anteros to Help Return Prediction

New Instrument Predicts Mine Roof Cave-Ins

Front Matter

Barrier to Virus Discovered; May Aid Paralysis Fight

Individual Muscle Fibers Repair Selves after Injury

First Known Photograph of Swordfish Stabbing a Boat

Quakes Have Bad Reputation but Science Finds Their Uses

War Tower in Bible Was “Old Fashioned” Even Then

Surgical Operation on Nerve for Severe Diabetes Reported