The Mental Health of the Hutterites
How a small German religious sect of the western U. S. and Canada was studied to determine whether its unique cultural background affected the occurrence of neuroses and psychoses among its people...
Features
Viruses within Cells
Until recently the electron microscope could make these small organisms visible only if they were isolated. Now an ingenious technique of preparation reveals them in their natural habitat...
Radio Waves from Interstellar Hydrogen
The thin clouds of hydrogen in space radiate energy at a frequency of 1420 megacycles and a wavelength of 21 centimeters. Astronomers use the phenomenon to locate the clouds and to detect their motion...
Fossil Man
Modern man has taken from the earth the remains of many creatures that dimly outline his evolution. Their bones offer no clue, however, to the forces which caused the rapid development of his unique brain...
Free Radicals
Having nothing whatever to do with politics, they are combinations of atoms which have a brief individuality in the course of chemical reactions and which are studied to show how the reactions proceed...
The Heat Barrier
It lies beyond the sound barrier as an obstacle to high-speed flight. If the airplanes of the future are to pierce it, they may bear a surprising resemblance to airplanes of the past
Alcohol in the Body
Because alcoholic beverages have been an intimate part of human life throughout history, their effects have given rise to a large folklore, most of which modern physiology has shown to be wrong...
Experiments in Acquired Characteristics
Ostrich calluses and many other inherited features are difficult to explain by chance mutation. The author believes that the work of modern embryology now makes a Darwinian explanation possible...
Children's Books
A fourth annual survey of writing about science for younger readers
Departments
50 and 100 Years Ago: December 1953
Science and the Citizen: December 1953
- Letters
Letters to the Editors, December 1953
- Amateur Scientist
The Amateur Scientist
- Departments
The Authors
Bibliography
Annual Index
