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    Stars and Heroes shine at CNN Tribute

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Stars and Heroes shine at CNN Tribute

CNN'S Michaela Pereira gives a sneak preview of "CNN Heroes: An All-Star Tribute," premiering Sunday, Dec. 7 at 8pm ET.

Stars and Heroes shine at CNN Tribute

CNN'S Michaela Pereira gives a sneak preview of "CNN Heroes: An All-Star Tribute," premiering Sunday, Dec. 7 at 8pm ET.