Feature

Study Bird’s Courting

Supersonic Capsule Designed for Jet Pilots

Renew Deep Ocean

Lung Cancer Total High

In Science Fields

New Machines and Gadgets

Earth’s Core Reported Not to Be Pure Iron

Climate Affects Health

X-Rays Cause Sterility

[Photograph]: Giant Furnace

Three-Fourths of Fallout Caused by Soviet Tests

All-Season Hibernation