Feature

Bay Area Shock May Foreshadow Strong Quake

Back Matter

Teenagers Reap Broad Benefits from ‘Authoritative’ Parents

Earth Sciences

Reshaping Views of How Young Stars Evolve

Preventing Pregnancy with the Cervical Cap

Making the Right Stuff

Asian Human-Origin Theory Gets New Teeth

Back Matter

Cloudy Concerns

AZT Helps in Early AIDS

Chilling an Atom in Solitary Confinement