Feature

U. S. Population Dangers

Education Bill Urged

Greenland Sharks Lure Fish Food by Their Eyes

“Astromech” Orbits Soon

Fast Dimming Nova Found in Sagittarius

Applied Research Opens New Roads to Basic Facts

World Joins Tiros Plan

Insects Fight Insects

Front Matter

New Ideas and Gadgets

Dates by Magnetism

New Computer Called “Fastest Ever Built”