Lead Poisoning
Among the natural substances that man concentrates in his immediate environment, lead is one of the most ubiquitous. A principal cause for concern is the effect on children Who live In decaying buildings...
Features
Solid Stars
Much of the matter in white-dwarf stars and pulsars (neutron stars) is under such enormous pressure that it must be considerably more rigid than normal steel
The Iroquois Confederacy
This alliance of Woodland Indian tribes played a significant role during the European colonization of North America. Excavations in New York now cast new light on their origins and social evolution...
The Prospects of Fusion Power
Recent advances in the performance of several experimental plasma containers have brought the fusion-power option very close to the "break even" level of scientific feasibility
Giant Brain Cells in Mollusks
Study of the neurons of a large mollusk with a stereotyped pattern of behavior yields a picture of what each cell does and how the cells interact to produce the behavior pattern...
The Fastest Computer
ILLIAC IV is made up of 64 independent processing units that by operating simultaneously will be capable of solving complex problems in a fraction of the time needed by any other machine...
The State of Water in Red Cells
Water in these cells has long seemed to exhibit anomalous properties. Recent studies show that it is the same as other water; the apparent anomaly arises from the close association of hemoglobin molecules...
Leonardo On Bearings and Gears
It is well known that Leonardo was not only an artist but also an engineer. The large corpus of his papers recently discovered in Madrid shows that his interest in technology was predominant...
Departments
50 and 100 Years Ago: February 1971
Science and the Citizen: February 1971
- Letters
Letters to the Editors, February 1971
- Recommended
Books
- Mathematical Recreation
Mathematical Games
- Amateur Scientist
The Amateur Scientist
- Departments
The Authors
Bibliography
