Underground Records of Changing Climate
Boreholes drilled into continental rock can recover fossil temperatures that reveal the climate of past eras. The results require careful interpretation
Features
The Most Distant Radio Galaxies
Astronomers have identified powerful radio-emitting galaxies that existed when the universe was only one tenth its present age These objects offer a glimpse at the early evolution of giant galaxies...
The Centrosome
By directing the assembly of a cell's skeleton, this organelle controls division, motility and shape. The details of its structure and function are just beginning to emerge
The Future of the Transistor
As it has grown smaller and cheaper engineers have scoffed at theoretical barriers to its progress -- so far
Monogamy and the Prairie Vole
Studies of the prairie vole -- a secretive, mouselike animal -- have revealed hormones that may be responsible for monogamous behavior
Autism
Autistic individuals suffer from a biological defect Although they cannot be cured, much can be done to make life more hospitable for them
The Great Well of China
More than 150 years ago the Chinese drilled one kilometer into the earth to extract brine for making salt. The well was the culmination of an 800-year-old technology
Eugenics Revisited
Scientists are linking genes to a host of complex human disorders and traits, but just how valid--and useful--are these findings?
Departments
- Letters
Letters to the Editors, June 1993
- Recommended
Book Reviews--A Brief for Science
- 50, 100 & 150 Years Ago
50 and 100 Years Ago: Helium Welding and Antidote for Magnesia
- Profile
A Powerful Voice for Women
- Mathematical Recreation
A Bundling Fool Beats the Wrap
- Science and the Citizen
Living Cure
A Bus for Scotty
Ecolocation
Mr. Clinton, Put Down that Watering Can
SNAPs and SNAREs
Cosmic Diagnosis
David's Victory
Time Warp
- Departments
Are Economy Watchers Chasing a Mirage?
Can Scientists "Make Change their Friend"?
- Technology and Business
Red-Banner Burger
Is that Shirt Ascorbic Acid?
Extinguished
Making Wavelets
Micromachine Line
"Plastics, Benjamin..."
