Public Opinion Polls
Why did they fail? A leading authority assays their weaknesses and suggests some tested new techniques that would improve their accuracy
Features
A Crisis in U.S. Archaeology
The damming of rivers will shortly flood the valleys where lived the aboriginal Americans. Archaeologists must work fast to save what they can of the remains
The Navigation of Birds
How do they find their way in their vast migrations over land and water? Some new evidence on an old mystery
Enzymes
They are the catalysts of life. Long known for their ability to turn sugar into alcohol, they engineer a host of other biochemical reactions
On the Development of Cancer
Transplanting tissue from one species to the eye of another yields a new insight into the nature of the malignant process
Stone Age Mathematics
The earliest comprehension of number and geometry appears to go back farther than the time of the Egyptians and Babylonians
Alcoholics and Metabolism
Individuality, points out the author, has a basis in biochemistry. The study of such variations may help in determining what creates compulsive drinkers
Departments
50 and 100 Years Ago: December 1948
Science and the Citizen: December 1948
- Letters
Letters to the Editors, December 1948
- Recommended
Books
- Amateur Scientist
The Amateur Astronomer
- Departments
An Index of Articles and Authors
Bibliography