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Page last updated at 07:55 GMT, Friday, 5 December 2008

'No such thing' as truth serum


There is one survivor among the terrorists that attacked Mumbai. The authorities are keen to find out as much about him and his accomplices as possible. Reports say they are ready to inject a truth serum into him to extract information. Mark Wheelis, a retired professor of microbiology at the University of California, discusses whether this sort of technology is still science fiction.

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