Morning Buzz: June 6, 2007

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This morning's top stories:

  • Two car bombs in Baghdad near the city's most revered Shiite shrine killed at least seven and wounded several dozen, the AP reports.
  • In the third Republican presidential candidate debate, White House hopefuls threw more than the occasional barb at President Bush as they wrestled with how to address the Iraq War.
  • An ancient Old Testament text from the Book of Exodus is on display for the first time in Jerusalem, offering a rare window into the "silent era" in the first millennium when very few Hebrew texts survived.
  • Traces of the genes active in the human nervous system have been discovered in the sea sponge, suggesting that the system's evolutionary roots are much older than once thought.