Feature

New Machines and Gadgets

North American Defense

Find Hormone Helps Eyes See at Night

Sea Slugs Air Shipped to Keep Brilliant Colors

Heart of “Ices” for Comet Nucleus

[Photograph]: World’s Speed Record

Goliath-Sized Transistor Has Record Power Output

Polio Virus Particles

Control Fungus Disease

Conquer Fruit Disease

Front Matter

No A-Bomb Effects