The Polygraph
The use of such an instrument as a “lie detector” raises two types of question: scientific and ethical. Some answers to the first kind of question clearly point to the greater significance of the second...
Features
Chemical Fossils
Certain rocks as much as three billion years old have been found to contain organic compounds. What these compounds are and how they may have originated in living matter is under active study...
A Paleo - Indian Bison Kill
Some 8,500 years ago a group of hunters on the Great Plains stampeded a herd of buffaloes into a gulch and butchered them. The bones of the animals reveal the event in remarkable detail
Pipelines
A vast and rapidly growing network transports oil and gas in many parts of the world. A recent trend is the use of pipelines to move solids both in slurries and in capsules containing solid products...
Rats
These ubiquitous companions of man are detested as dangerous pests, but they are worth studying for their own sake. Their social behavior is subtly adapted to maintain the integrity of the group...
Electric Currents in Organic Crystals
A new technique for measuring the energy levels of certain organic crystals may provide the key to an understanding of the mechanisms of electron transfer in living plants
Can Time go Backward?
It seems intuitively plausible that it can, but the concept creates a variety of paradoxes. For example, a time-reversed galaxy would be invisible to us because light would flow into it instead of out...
The Kinship of Animal and Human Diseases
Knowledge of human diseases has been greatly advanced by inducing similar diseases in experimental animals. It now appears that there is still much to be learned from animal diseases that occur naturally...
Departments
50 and 100 Years Ago: January 1967
Science and the Citizen: January 1967
- Letters
Letters to the Editors, January 1967
- Recommended
Books
Bibliography
- Mathematical Recreation
Mathematical Games
- Amateur Scientist
The Amateur Scientist
- Departments
The Authors
