Wetlands
These havens of biodiversity are often endangered because they can be hard to identify. Understanding their variable characteristics can lead to more successful conservation efforts
Features
The Search for Strange Matter
Between nucleus and neutron star stretches a desert devoid of nuclear matter. Could strange quark matter fill the gap?
The Toxins of Cyanobacteria
These poisons, which periodically and fatally contaminate the water supplies of wild and domestic animals, can also harm humans. But they are being coaxed into doing good
Breaking Intractability
Problems that would otherwise be impossible to solve can now be computed, as long as one settles for what happens on the average
Animal Sexuality
Animals have evolved a range of mechanisms to determine whether an individual takes on masculine or feminine traits. Cross-species comparisons offer some surprising insights into the nature of sexuality
World Linguistic Diversity
The ancestor of each language was taken to its current territory by pioneers, farmers, traders or a conquering elite. Multidisciplinary studies are clarifying their respective roles
The First Data Networks
The optical telegraph is almost forgotten. Two centuries ago it moved messages over hundreds of kilometers in a few minutes
Departments
A War not Won
- Letters
Letters to the Editors, January 1994
- Recommended
Book Reviews--Crossing in Style
- 50, 100 & 150 Years Ago
50 and 100 Years Ago: Over-Logging and Cold Period in Europe
- Profile
Keyhole View of a Genius
- Mathematical Recreation
Knots, Links and Videotape
- Science and the Citizen
Joe Btfsplk
Getting a New Rise out of Superconductors
EQ, Phone Home
A Dark Matter
Biowarfare Wars
Chiller Thriller
Something to Chew on
Dioxin Indictment
- Departments
Lies, Damned Lies and Models
The Tragedy of Enclosure
- Technology and Business
RoboTuna
Survival Tactics
Material Advantage
Optical Tomography
Gene Readers