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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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Hungry white dwarf
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An artist's conception shows how a superdense white dwarf star might pull apart a passing planet and incorporate its matter into Saturn-like rings.
Credit: Illustration by Lynette Cook
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