Topics and Guests for May 12

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The news begins anew with "Studio B"...

Ohio Republican John Voinovich (search) delivers a blistering attack on John Bolton (search) Thursday morning, saying President Bush's nominee for U.S. ambassador to the United Nations "is the poster child of what someone in the diplomatic corps should not be." But will Voinovich stand behind the president's nomination and vote in favor of Bolton's nomination? We'll get the latest from FOX News' Brit Hume, Washington, D.C. managing editor.

Then, a car bomb explodes near a busy Baghdad market as insurgents unleash another day of bloody attacks, killing at least 21 Iraqis and wounding more than 70. And, two U.S. Marines were killed and 14 wounded when a bomb hit their troop transport vehicle Wednesday during the major U.S. military offensive targeting Iraqi insurgents? Will Operation Matador (search) be successful in curbing insurgent violence?

And, jurors in the Michael Jackson (search) child molestation trial are expected to see more footage of videotaped outtakes of interviews the pop star gave defending himself. Will the videos convince the jury of Michael Jackson's claimed innocence? Laura Ingle, KFI Radio reporter, gives us the lowdown from outside the Santa Maria courthouse.

Plus, scientists in France say they found a higher chance of a sudden heart attack in people whose hearts beat too fast during rest and too slow during exercise. So could a simply stress test reveal a person's likeliness of a deadly heart attack? Dr. Steven Garner of St. Vincent Catholic Medical Centers weighs in.

These stories and much more don't miss this edition of "Studio B"!

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Note: Topics subject to change