The Evolution of Galaxy Clusters
The most massive objects in the universe are huge clusters of galaxies and gas that have slowly congregated over billions of years. The process of agglomeration may now be ending
Features
Cloning for Medicine
Now that genetically modified and copied mammals are a reality, biomedical researchers are starting to develop imaginative ways to use this technology
Making Ultrabright X-Rays
Radiation a billion times brighter than the sun's is illuminating a host of scientific and technical phenomena
Combating Prostate Cancer
Recent advances in diagnosis and treatment promise to extend survival time and improve the quality of life for many patients
Leafy Sea Dragons
These masters of camouflage are fierce predators—and one of the few species in which males become pregnant
Building the Better Bug
Inserting new genes into a few specific insect species could stop some infectious diseases, benefit agriculture and produce innovative materials
Physicists in Wartime Japan
During the most trying years of Japan's history, two brilliant schools of theoretical physics flourished
Sizing Up Software
Unlike oil, steel or paper, software is an intangible commodity. This elusive quality makes computer programs difficult to quantify
Departments
- From the Editor
Counting Our Blessings
- Letters
Letters to the Editors, December 1998
- Recommended
Reviews and Commentaries: The Scientific American Young Readers Book Awards
- Anti Gravity
A Leg to Stand On
- 50, 100 & 150 Years Ago
50, 100 And 150 Years Ago: Opinion Polls, Cancer on the Rise and Irresistible Force
- In Brief
In Brief, December 1998
- Profile
Smashing through Science's Glass Ceiling
- Mathematical Recreation
Your Half's Bigger than my Half!
- Amateur Scientist
Sorting Molecules with Electricity
- Science and the Citizen
Andro Angst
Pioneering Gas Leak?
Leaping Leptin
The Population Slide
- By the Numbers
Human Rights throughout the World
- Working Knowledge
Working Knowledge--Parachutes
- Connections
Tea, Anyone?
- Departments
Annual Index 1998
- Cyber View
Hello, is this the Web?
- Technology and Business
Where no Brush can Reach
Shading the Twinkle
Beating the Tempest
Computing with Chaos
- In Focus
Nothing But Light
