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Science News for September 24, 1997


Stiffening The Spines Of Large Space Structures

A Stanford doctoral student has developed a dynamic control system that uses Global Positioning System signals to actively control errant oscillations in large space structures. The system can detect centimeter-level precision and automatically fire thrusters to compensate for wayward motions, allowing for stable structure operation.

New, Environmentally Friendly Technique For Separating Liquids Invented At UNC-CH

Researchers at UNC-CH have invented a process using carbon dioxide to separate liquids, promising a more environmentally friendly alternative to toxic solvents. The new method, described in Nature, has shown success in removing dye from water and could be applied in industries releasing vast amounts of waste water into the environment.