A Clonaid official backpedals on providing evidence of the company's claim that a cloned infant has been born. Clonaid's CEO says the mother of the child born Dec. 26 is wavering on providing a DNA sample key to establishing genetic proof. Scientists remain skeptical of Clonaid's claim. Hear from NPR's Joe Palca and James Randi, who is devoted to debunking pseudoscientific claims.
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