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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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Scientists are now able to "reset" the DNA in a mature body cell so that the cell can grow into any kind of cell in the body, from heart muscle cells to nerve cells and bladder cells.Credit: Bryan Christie
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