Heart of the Matter
A particle "factory" for probing a seminal asymmetry
From Mice to Men
The burgeoning business of gene therapy
Porous silicon proves versatile, but is it real?
The Color of Sound
Shedding light on sonoluminescence
The nation contemplates what to do with Superfund
Medicine closes in on an artificial liver device
Glaciers and oceans reveal a mercurial climate
Does the brain have a supreme integrator?
Is the last ground sloth hidden in the Amazon?
A Girl's Best Friend
Diamond continues to resist efforts at economic synthesis
When Cells Divide
Making space for the next wave of wireless communications
IBM's woes visit its esteemed research division
A Joycean Mutation
Researchers discover a new mechanism for cancer
Wanted: a Defense R&D Policy
Defense researchers seek to redefine their mission
Closing in on the "solar neutrino problem"
The Fertility Decline in Developing Countries
Family size is decreasing in many Third World countries. The reasons provide the key to slowing population growth
The Compton Gamma Ray Observatory
A steady stream of data from this orbiting observatory is painting a portrait of a dynamic and often enigmatic cosmos
MHC Polymorphism and Human Origins
The diversity of human tissue types was generated long before Homo sapiens emerged
Africanized Bees in the U.S.
Africanized honeybees have reached the U.S. from points south As more of them arrive, they will certainly wreak some havoc but perhaps not the type their "killer bee" nickname would imply...
Drugs by Design
Structure-based design, an innovative approach to developing drugs, has recently spawned many promising therapeutic agents, including several now in human trials for treating AIDS, cancer and other diseases...
Coupled Oscillators and Biological Synchronization
A subtle mathematical thread connects clocks, ambling elephants, brain rhythms and the onset of chaos
The Death Cults of Prehistoric Malta
New archaeological excavations reveal that as the ancient island societies suffered from environmental decline, they developed an extreme religious preoccupation with life and death...
Now that the blizzard of hype has stopped, workers are gradually realizing the promise of high-temperature superconductors
Letters to the Editors, December 1993
- 50, 100 & 150 Years Ago
50 and 100 Years Ago: Penicillin and Molecules in Diamonds
- Fact or Fiction
Book Reviews—Science Books for Young People
- Amateur Scientist
Annual Index 1993