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Today Show
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Author undergoes hundreds of medical tests
March 11, 2009
Are you a ferocious T-Rex – or just a chicken?
March 20, 2008
How toxic are you?
October 19, 2006
Today Show
Frequent Guest
Select Appearances
Author undergoes hundreds of medical tests
March 11, 2009
Are you a ferocious T-Rex – or just a chicken?
March 20, 2008
How toxic are you?
October 19, 2006