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Publisher's Summary

"A Solar Grand Plan": An ambitious scheme would enable solar power to end U.S. dependence on foreign oil - as well as slash greenhouse gas emissions.

"The Scientific American 50": A list of the top researchers, companies, and architects of tomorrow's trends.

"Second Thoughts about Fluoride": New research indicates that this cavity-fighting treatment should only be used in small doses.

"Self-Powered Nanotech": The spread of tiny machines and the search for their power sources.

"Hotspots Unplugged": Volcanic hotspots are actually wandering the Earth.

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  • ©2008 Scientific American

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