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Moon Smasher
A NASA satellite called LCROSS heads to the moon in the hope of finding buried water.

Auto-Tune
Can't carry a tune? Andy Hildebrand's pitch-correction software can help you sing like a star.

Autism Genes
Researchers have begun to zero in on genes that might be responsible for autism.

Profile: Luis von Ahn
A computer scientist finds novel ways to stop spammers and harness the brainpower of millions of people.

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