Feature

Finds House 5,000 Years Old at Ur

Kennelly-Heaviside Ionized Layer: A Classic of Science

Carbon Monoxide May Now Be Removed from Auto Exhaust

Ancient Ivory Tools Testify to Existence of Alaskan Culture

First Glances at New Books

Crime Wave Spreads to Wild Animals

Nature Ramblings: White Pine

Adults Need Vitamin D

Trees Date Alaskan Glaciation

Parrot Fever Not Transmitted by Birds Confined to Zoos

In Various Science Fields

Insane Not Likely to Have Families