The Early Americans
The pattern of their movements some 10,000 years ago has been outlined by widely scattered clues and new determinations of their age. The second of two articles
Features
The Bevatron
It is one of three great machines now being built to accelerate protons to energies of more than a billion electron volts. With such accelerators physicists hope to learn more of the nucleus...
People in Groups
Are there patterns of behavior common to every human organization? An account of studies in three aspects of the problem: communication, leadership and interaction
The Common Cold
It is a subject fraught with folklore and a remarkable paucity of proved facts. Here is a summary of the four years of work at the famous Salisbury colds laboratory
Georgii Agricolae de re Metallica
A Renaissance genius was the earliest modern writer on mining and metallurgy
White Blood Cells v. Bacteria
Some new observations have settled an old argument as to whether phagocytes are primary or secondary antagonists of infection. It seems that in acute infection they are the first line of defense...
Friction
One of the most familiar phenomena is one of the most difficult to explain. What is responsible for it: surface roughness, molecular cohesion or electrical attraction?
Windows
Because glass is transparent to some kinds of radiation but opaque to others, it can be used to trap solar energy. This will be a major method of heating in houses of the future
Departments
50 and 100 Years Ago: February 1951
Science and the Citizen: February 1951
- Letters
Letters to the Editors, February 1951
- Recommended
Books
- Amateur Scientist
The Amateur Astronomer
- Departments
Bibliography
