Feature

[Photograph]: Plastic Lifeboat

Nature Ramblings: The Teeth of the Matter

New Machines and Gadgets

Research Vessel Begins Four-Month Ocean Study

Dolphins Hitch Free Rides on Bow Waves of Ships

Russian Gift Identifies Unknown Mineral

Books of the Week

Cell Makes Virus

Study Life in Antarctica

Natural Selection Still True

Circulating Cold Blood Gives Surgeon More Time

Expedition Probes Pacific