By Emily Sohn
Just 2 weeks before race-car enthusiasts will flood Indianapolis for the Indy 500, thousands of high school students zoomed into the city for a more cerebral, yet also lucrative, competition. The 2006 Intel International Science and Engineering Fair (ISEF) offered some $4 million in scholarships, internships, science trips, and other prizes to a field of nearly 1,500 competitors.
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The students, from 47 countries, created full-throttle experiments and inventions, and judges gave green flags to the most impressive ideas.