Networks of seismic instruments could monitor a total test ban with high reliability. Even small clandestine explosions could be identified even If extreme measures were taken to evade detection...
A current of calcium ions triggers the passage of signals from one nerve cell to another. The process is studied in a synapse (a neuronal junction) hundreds of times a synapse's usual size...
Microelectronic technology has presented astronomers with a sensitive new radiation detector that is expected to improve the accuracy of many crucial observations
Computer programs not only play games but also process visual information, learn from experience and understand some natural language. The most challenging task is simulating common sense...
When small ferromagnetic particles are suspended in a liquid carrier, the resulting "ferrofluid" exhibits unique properties that are intuitively baflling as well as technologically useful...
A bore is the hydraulic analogue ofa sonic boom: a moving wall of water that carries the tide up some rivers that empty into the sea. For several hours after it passes the river rows upstream...
In most of the Temperate Zone a new colony of honeybees must locate a snug shelter in order to survive the winter. The search is carried out by the older "scout" bees with remarkable rigor...
Reliable records of solar and lunar eclipses go back as far as 750 B.C. They bear on such questions as whether the sun is shrinking or the earth is not spinning as fast as it once did
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