Feature

Praying Mantis Preys on Insects

Map Human Starvation

Turn Garbage to Humus

Books of the Week

Talking Dictionary Translates Languages

Language Disproves Theory of Kon-Tiki

Why Metals Make Good Bearings Told in Tests

Nature Ramblings: America’s Cherubim

Retirement Activity Plans

[Photograph]: Model Plant

Warding off Infection

Calcium Lack Leads to One Kind of Arthritis