Feature

Research Aided by Machine Solving Difficult Equations

Discoveries Tell of Life in Arctic Thousand Years Ago

Nature Ramblings: A Botanical Orphan

Ultra-Modern Marriage Laws Governed Ancient Egyptians

Turtle by the Ton Taken from Lake in Missouri

First Glances at New Books

Front Matter

Ruins of Greek Building Found under Modern Homes

America Really Alberica, Old Czech Paper Shows

Child in Small Family Held Most Intelligent

Scientist Says Universe Is Actually Exploding

Electric Apparatus Probes Secrets of Earth’s Interior