NEWS AND ANALYSIS
In Focus
- Deadly Enigma
- Down the Drain
- Jungle Medicine
- Beyond the Test Ban
- Sex and the Spinal Chord
- The Victors Go Despoiled
- Hard to Melt
- Fear and Fecundity
- In Brief
- The Sale of a New Machine
- Welding With a Match
- Plastic Power
- Recently Netted...
- Manuel Elkin Patarroyo: The Man Who Would Conquer Malaria
WORKING KNOWLEDGE
- Pop Tops
THE AMATEUR SCIENTIST
- Dissecting the Brain with Sound
REVIEWS
- The Scientific American Young Readers Book Awards
- Hands On Science
- More Winners In Brief
COMMENTARIES
- Connections: Sweet Dreams
ARTICLES
- The Specter of Biological Weapons
- Primordial Deuterium and the Big Bang
FROM THE EDITORS
- 50, 100 and 150 Years Ago
- Letters to the Editors