Protein from Petroleum
Certain microorganisms thrive on hydrocarbons. In growing they synthesize proteins rich in amino acids that plant foods lack. Protein from petroleum may help solve the world's food problem...
Features
Electrical Effects in Bone
When bone is mechanically deformed, it generates a small electric current. This suggests that the changes that occur in living bone when it is under mechanical stress are mediated by electric fields...
Diamonds in Meteorites
Many of the meteoritic fragments around Arizona's Meteor Crater (and also three other meteorites) contain bits of diamond. These inclusions provide information on the history of the meteorites...
Chance
The word has many definitions, not all of which apply to the word probability. The vagueness of the concept persistently contributes to errors in its application
Quantum Effects in Superconductors
In a superconductor the motions of widely separated electrons are related. This leads to curious consequences when superconducting bodies of various shapes and sizes are placed in a magnetic field...
Early Man in Peru
The peculiar climate and abundant sea life of the Peruvian coast affected the way of life there from the time of the first nomadic campers 9,000 years ago to that of the predecessors of the Incas...
The Chemistry of Cell Membranes
The walls of the living cell consist partly of the fatty substances called phospholipids. It appears that some of these substances play an active role in the transport of other substances across the walls...
The Origins of Facial Expressions
The raised eyebrow, frown, smile, laugh and even the ability to speak may all have evolved from ancestral reflex actions that were gradually transformed into means of communication
Departments
50 and 100 Years Ago: October 1965
Science and the Citizen: October 1965
- Letters
Letters to the Editors: October 1965
- Recommended
Books
- Mathematical Recreation
Mathematical Games
- Amateur Scientist
The Amateur Scientist
- Departments
The Authors
Bibliography
