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Publisher's Summary

In this issue: "A Quantum Threat to Special Relativity": A quantum effect that has recently presented a serious problem to Einstein's special theory of relativity, thus shaking the foundations of physics. "Saving New Brain Cells": New research that suggests the more fresh neurons are challenged - the more they flourish. "New Tactics against Tuberculosis": What scientists are doing to combat one of the leading causes of death throughout the world. "Monitoring for Nuclear Explosions": Why the detection of nuclear weapons testing has become so effective. "The World's Smallest Radio": How a single carbon nanotube can function as a radio that detects and plays songs.
©2009 Scientific American
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