other students possible. john blackstone has the story. >> reporter: paralyzed from his stomach down, he has spent his high school years in a wheelchair. he could walk earlier, but weeks later, drinking and driving he crashed into a tree. >> every day, i'm glad to be alive. >> reporter: his life had been changed but changed again last fall at the university of california berkeley when he met this engineering professor. >> i realized he has the man i had been waiting for a long time. he is so inspiring and he has changed the way i do my work. >> reporter: for 20 years, the doctor has been developing exoskeletons, a robotic way to help. >> he said i have this dream for you, i want to see you walk. >> reporter: he was a history major and joined the engineering students in developing a light weight, low