Feature

Plant and Ants Cooperate to Destroy Grasshoppers

An Ape for a Baby Sister

Cosmic Rays Supply Most of Energy for Universe

Century-Old Collection Yields New Plant Species

In Science Fields

Ancient Aztec Capital Being Dug out beneath Mexico City

Valuable Chemical to Be Extracted from Seawater

Free of Ice, Northern Lands Appear to Be Tilting

Volcanic Eruptions Possible in Arizona

Two Mental Diseases Really Five, Statistical Study Shows

Nature Ramblings: Hospitality to ‘Hoppers

Sleeping Sickness Outbreak Greatest in History