the newshour's anne davenport reports. >> reporter: can a camera be a tool for peace?s one of the questions behind national geographics "photo camps." now in their 10th year operating around the world, one program focused on south sudan, known as the world's "newest nation." south sudan has been embroiled in a series of civil wars, the most recent 13-month conflict has killed more than 10,000 people dead, reopened deep ethnic divides, causing more than one million to flee and driving the country of 11 million closer to famine. catherine simon arona is a law student in juba, the nation's capital and largest city. she's one of 20 students at the university there, from a cross section of tribes, who set out to document their reality. we talked to her on a recent trip to national geographic headquarters in washington, where she explained the 'back story' to this image of an orphan at the "confident children out of conflict" >> this child was so curious that he couldn't hold back how he wanted to touch the camera and take the picture himself, because i took their pictures a