NOVA scienceNOW

Season 4 Episode 1

Diamond Factory, Anthrax Investigation, Auto-Tune, Luis von Ahn

Aired Tuesday 8:00 PM Jun 29, 2009 on PBS
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Episode Summary

Visit a laboratory where entrepreneurs are growing perfectly pure diamonds. The new science of microbial forensics reveals the source of the anthrax used in the deadly attacks of 2001. Can't carry a tune? Andy Hildebrand's pitch-correction software can help you sing like a star. A computer scientist finds novel ways to stop spammers and harness the brainpower of millions of people.moreless

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