Feature

Rubber Heart Devised

Moon May Give Evidence on How Stars Are Born

Two-Mile Laser Beam Reduced through Mirrors

Bridge Floors Tested in Refrigerated Rooms

Doctors Are Reading

Atomic-Age Sherlock Holmes

[Photograph]: Temperature by Ear

Books of the Week

Population Growth Seen as Sparking Nuclear War

New Model Heart Pacer Gets Energy from Heart

Sprinters Burn Oxygen

Rehabilitated May Drink