WASHINGTON - JUNE 10:  (L-R) Eight-year-old Alyssa Drew, nine-year-old Bryce Gullion and eight-year-old Rebekah Blatt from Dardenne Elementary School in O'Fallon, MO, wait to speak about their invention named 'Living Impaired Future Eye' during the Toshiba NSTA ElxploraVision Awards luncheon June 10, 2005 in Washington, DC. The L.I.F.E. technology allows visually impaired people to use a hands-free unit that uses infrared motion system and ultrasound to detect and communicate movement to the user, allowing blind people to walk without a cane. The awards competition is one of the world's largest K-12 science and technology competitions in which teams of students envision technologies that could exist 20 years in the future.  (Photo by Joe Raedle/Getty Images)