Al-Jazeera Video: "life-changing" invention from the West Bank

"May 13, 2010 — Three schoolgirls in the West Bank have developed a life-changing device for the blind.

It's an advanced cane called "Stick-tech", and they're taking it all the way to the U.S. to show it off: They've been chosen from over six million applicants world wide to take part in the International Science Fair.

Nour Odeh reports from the Askar refugee camp. "