Intensive Heart Care
In hospitals equipped with coronary care units the mortality rate from heart attacks has been reduced by about a third. Widespread application of the new therapies could save 60,000 lives a year...
Features
Radar Observations of the Planets
Echoes of high-frequency waves aimed at the planets from the earth provide a new test of the general theory of relativity and precise determinations of the anomalous spin rates of Mercury and Venus...
Sunburn
What happens to human skin, its various types of cells and their molecular constituents when it receives an overdose of ultraviolet radiation?
X-Ray Crystallography
The new knowledge of the atomic structure of matter uncovered over the past half-century by the X-ray-diffraction technique has led to a fundamental revision of ideas in many sciences
The Control of Plant Growth
The demonstration that the growth of plants can be turned on and off at will by treating them with the proper combination of promotive and inhibitory hormones suggests that this process also occurs in nature...
The Beginnings of Wheeled Transport
Mankind has traveled on wheels for at least 5,000.years. The recent discovery of ancient wagons at sites in the U.S.S.R. casts doubt on the accepted hypothesis that vehicles were invented in Mesopotamia...
Fluidization
Many chemical and physical reactions can be carried out by suspending a bed of solid particles in a stream of gas. The technique is widely used for the catalytic cracking of petroleum and much other technology...
Departments
50 and 100 Years Ago: July 1968
Science and the Citizen: July 1968
- Letters
Letters to the Editors, July 1968
- Recommended
Books
- Mathematical Recreation
Mathematical Games
- Amateur Scientist
The Amateur Scientist
- Departments
The Authors
Bibliography
