presidents and embraced by hollywood activists, like anlina jol. >> i came popar in thu.s. i appreciated it, but i didn't do it to be a celebrity, i--it was a call to action, and that's how i looked at it always. >> he's now using the proceeds of the book to help his homeland rebuild. a peace deal in 2005 allowed him to join hundreds of other lost boys returning to southern sudan. though the boys are now all grown men. >> i'm growing taller. >> so he was a boy, was he? >> yeah, he was. >> ty'd come back to a land that was nearly razed to the ground in 20 years of fighting. >> after the war, so much, uh, infrastructure--the little infrastructure that there was was completely gone. the village has been burned and burned over for many years. >> but since his first visit home in 2003, the towns have started to rise from the ashes. >> yes, it has changed much. last year there was no road like this. and, um, you see people going to school. all schools were closed during the war. so a lot of change is--is taking place. >> it's all coming back to life. >> yep. >> valentino was able