Feature

New Machines and Gadgets

Front Matter

First Photosynthesis Step

AAAS Prize Awarded for Paper on Earth’s Origin

Killer Trait in Animals

Plastic Coats for Eggs

Airplane Engines Designed by Novel Mothball Method

[Photograph]: Hydrofoils

DDT Scores More Victories

Conflict Induces Crackup

Bacitracin Goes on Trial

[Photograph]: Drafting Stencils