Scientific American Magazine

Unless the current negotiations in Geneva succeed in prohibiting the development, production and stockpiling of chemical weapons, a new and more dangerous phase of the arms race may be in store

In which bits of stone scattered in sand are analyzed to reconstruct human activities of some 9,000 years ago. In one method of analysis flint tools are refitted into the piece from which they were struck

For many years this phenomenon, in which an apparently healthy baby dies quite unexpectedly, was mystifying to physicians. New evidence points in a majority of the cases to abnormalities in respiratory control

Bacteria into which nonbacterial genes have been introduced are able to manufacture nonbacterial proteins. Among the proteins made by recombinant-DNA methods are insulin and interferon

In composition they are metallic, but they have the noncrystalline atomic structure typical of a glass. Such a material can be prepared by cooling a molten alloy at a rate of a million degrees per second

The large-scale structure of the universe today is regular to within one part in 1,000. There is evidence that it has been that way since 10^-35 second after the start of the big bang

The nature of their food supply seems to determine whether they live alone or in a pack. Such patterns of behavior may bear on the question of whether or not they are a threat to livestock

Large molecules formed in the cell body move great distances through the axon to the nerve endings. Other substances are returned through the axon to be disposed of or reconstituted