Feature

Nature Is Prodigal Even in Agents Producing Disease

Rich Fossil Insect “Mine” Found in Northern Russia

Cataracts Followed Use of Dinitrophenol for Reducing

Prehistoric Mine Tragedy Revealed Too Late

In Science Fields

Scientists Like Their Jokes

[Photograph]: Moth’s Message-Detectors

Baby’s Smile Not Instinctive Response to Human Voice

Thyroid Slows Metabolism When Temperature Is Low

Forests Store Sun’s Energy Faster than Coal Is Mined

First Glances at New Books

Front Matter