Feature

Seven Spaceships to Mars

Only Ten Giant Galaxies Send out Radio Signals

Test for Rheumatic Ills

Unnecessary Amputation Avoided by X-Ray Use

Remedy Lag in Math

Patents of the Week

Iron Curtain Neanderthal

Teaching by Computer

Future Students May Get Both Science and Culture

[Photograph]: New Twist

In Science Fields

Fallout Shelters’ “Lived-in” Look