Feature

Mica and Resin Base of Insulation

Jog-Log Helps Ships Zig When Ocean Zags

Low-Grade Ore Yields Iron

Books of the Week

Detector Identifies Atoms

Nature Ramblings: Seal

Less Glow on Spring Nights

New Machines and Gadgets

New Chemical Slows down Cancer Growth

One Type of Grass May Remain Green All Year

Cortisone Cure Lasting

[Photograph]: Transparent Research