Beryllium and Berylliosis
Extracted from beryl, a crystal which is almost identical with emerald, this light metal has found glamorous applications in modern technology. It is also capable of causing a serious disease...
Features
Hot Spots in the Atmosphere of the Sun
Regions in the sun's corona appear to be as much as 1,000 times hotter than its surface. They may be the long-sought connection between sunspots and disturbances in the atmosphere of the earth...
Celestial Navigation by Birds
A remarkable series of experiments shows that migratory birds navigate by the stars. In a planetarium their flight direction is controlled by the position of the stars in the artificial sky...
Magnetic Resonance
Atomic nuclei and electrons, which spin on their axes like tops, can be tipped over by magnetic fields. The technique furnishes much information about complex molecules and chemical reactions...
Repetition and Learning
Is drill necessary in rote learning? The author's experiments indicate that we form mental associations instantly. The role of repetition is to help us retain what we have already learned...
A Universal Molecule of Living Matter
The tetrapyrrole ring, a chemical structure made up of four smaller rings, occurs in the chlorophyll of plants, the hemoglobin of blood and many enzymes which, like hemoglobin, take part in respiration...
The Cerebellum
Until recently the function of this part of the brain was unknown. Mapping of its electrical circuits now indicates it may be a monitor of communication between brain and body
Poisonous Tides
The explosive multiplication of certain marine microorganisms can kill fish by the millions. The investigation of these outbreaks is now elucidating some fundamental questions of oceanic ecology...
Departments
50 and 100 Years Ago: August 1958
Science and the Citizen: August 1958
- Letters
Letters to the Editors, August 1958
- Recommended
Books
- Mathematical Recreation
Mathematical Games
- Amateur Scientist
The Amateur Scientist
- Departments
The Authors
Bibliography
