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The orthodox methods must be pressed, but it seems they cannot solve the problem without the aid of the unorthodox ones. And the adoption of unorthodox methods calls for basic changes in cultural attitudes
The two-strand molecule that incorporates the genetic information of the living cell is subject to damage. Experiments with bacteria reveal that the cell has a remarkable ability to repair such damage
Some volcanic rocks are magnetized in a direction opposite to that of the present magnetic field of the earth. The reason is that the earth's field has reversed nine times in the past 3.6 million years
Light and deep sleep differ physiologically, deep sleep having much in common with being awake. Studies with cats now suggest that the two states of sleep are induced by different biochemical secretions
It is an electron that is released into solution when certain metals are dissolved in a liquid such as ammonia. It can also be released by ionizing radiation, and it may play a role in many chemical reactions
A combination of metals with a particularly low melting point is called a eutectic. By controlling the way a eutectic solidifies It is possible to produce alloys with a host of useful properties
Measurement of the heat emitted through the skin at various points on the body has proved valuable In the diagnosis of such disorders as tumors and arthritis and In observing the effects of treatment
In India, as in many other lands, herdsman has succeeded hunter and farmer has succeeded both. A study of tribal groups that still pursue these ancient livelihoods helps to illuminate a shadowy past