anna corin, cnn, afghanistan. >>> all right.n't walk down the street without passing someone on their cell phone. our own dr. sanjay gupta is up next to explain what this radiation can do. to your brain. my kids would love this xbox 360. well we brought back layaway, so you can pay a little bit at a time. my kids would be like [tearfully] this is the best day ever! [ sobbing ] [ male announcer ] layaway's back. shop now and have more time to pay. walmart. >>> all this week we're looking at how mobile technology is change ouring world. it's cnn's other mobile society initiative, and today we're looking at how safe use youring cell phone is. the s.e.c. has not set new radiation exposure limits in the past 15 years, and since then there's been a lot of research that has surfaced. so much so that the government is now urging them to update the safety regulations. cnn's own resident brain surgeon, dr. sanjay gupta, of course. nice to see you. i thought that was pretty cool. you have to remind people you're a brain surgeon as well. jo

anna corin, cnn, afghanistan. >>> all right.n't walk down the street without passing someone on their cell phone. our own dr. sanjay gupta is up next to explain what this radiation can do. to your brain. my kids would love this xbox 360. well we brought back layaway, so you can pay a little bit at a time. my kids would be like [tearfully] this is the best day ever! [ sobbing ] [ male announcer ] layaway's back. shop now and have more time to pay. walmart. an idea... how long before he goes to college? [ female announcer ] ...a question. are we ready to pay for college? [ female announcer ] and when the conversation turns to finances... turn to wells fargo in person, over the phone or online. we help turn questions into solutions and goals... turn into accomplishments. ♪ we did it. [ female announcer ] stop by. let's have a conversation. wells fargo. together we'll go far. >>> all this week we're looking at how mobile technology is change ouring world. it's cnn's other mobile society initiative, and today we're looking at how saf

anna corin has the story. >> reporter: mohammed in as i'm has come a long way to tell me his story.g more than 300 kilometers from his home near the pakistani border to kabul. a story that began almost a decade ago when he was arrested in october 2002. they accused me of being involved with the taliban, attacking alalbad airport 40 kilometers from my home, he says, but i told them how was i involved when you arrested me in my house? according to u.s. records, nassim headline possession of rocket mortars and other equipment when he was detained. nassim denied that. his troublings were just beginning. he was taken to baghram prison, at the time run by the u.s. defense department, and says he was soon tortured. they gave me electric shocks on my wrists. i was hung from the ceiling for seven days. our faces were masked, and we were handcuffed. our legs were chained as well. he says some prisoners committed suicide. he also thought about ending his life. i completely lost my mind. if a person doesn't sleep for seven days hanging from the ceiling, my body aching, what hope do they have? t

as anna corin reports. >> reporter: at a park in downtown kabul huddled into the trees are a group of by society. with the syringe in one hand, a vial of heroin in the other, this 28-year-old man begins a ritual that's been part of his life for the past seven years. he draws the liquid out, what's left over he drinks, and then he gets into position. health workers give him stirl swabs to clean his skin. he doesn't use the crook of his arm because his veins have collapsed. instead he chooses the back of his hand. for the next five minutes he slowly pumps heroin into his veins. he then collapses with the needle still sticking out of his hand. this is a tragic scene repeated throughout the country with up to one million afghanees addicted to drugs. 80% of the population, double the world average. with afghanistan producing 90% of the world's opium, the main ingredient of heroin, drugs here are pure in quality and very cheap. 28-year-old reza injekts half a gram a day that costs around $4. he started a year ago after being introduced it to it by a bad friend. he says he would like to give