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Publisher's Summary

In this month's Scientific American, hear why some astronomers think most of the universe is hostile to other forms of life (sorry, Star Trek fans). And, macular degeneration is one of the most common ailments of old age. But, at Johns Hopkins University, some amazing research provides hope of battling this affliction.
Want more Scientific American? You can listen to previous issues by clicking on archives under periodicals.
©2001 Scientific American

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