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In the December 5 Issue:
- TABLE OF CONTENTS
- Climate might be right for a deal: Copenhagen negotiations will take steps toward a climate-stabilizing treaty
- Botanical Whales: Adventures in the Tortugas reveal that seagrass fields need saving too
- Breaking the Speed Limit: Studies examine physiology and technology to better foresee the ultimate edge of human performance
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Detecting debris
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NASA engineers worried that the space shuttle Discovery could have been struck by a flying brick during a launch in May 2008 (shown), but a new analysis shows the supposed brick was only a piece of foam.
Credit: NASA/Kennedy Space Center
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