Probing Question: How does anesthesia work?

Many inventions of the 19th century -- telephones, airplanes, phonographs -- have helped to shape the modern world. However, it could be argued that the 1846 discovery of effective surgical anesthesia holds a place of honor among the century's advances.

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<p><a href="http://www.physorg.com/news112545493.html">Probing Question: How does anesthesia work?</a></p> <p>Many inventions of the 19th century -- telephones, airplanes, phonographs -- have helped to shape the modern world. However, it could be argued that the 1846 discovery of effective surgical anesthesia holds a place of honor among the century's advances.</p>