Feature

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

In Science Fields

Untapped Sources of Oil

Mutations with Chemicals