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Tony Spear discusses Lunar X prize

Carnegie Mellon competes for Google Lunar X Prize.

How Things Work: Search engines

Find out how Google, Yahoo and MSN throw information at users in a fraction of a second.

Health Talk: Dyslexia

Dyslexia hinders ability to learn.

SciTech Briefs

Researchers place lens in a mouse's brain.

HealthLine

Flu shots may not be the solution to the illnesses the season brings upon us.

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