>> angela was this woman. >> my name is angela wilder. i'm a student nurse at am s u. i will be assessing your cardiovascular system today. >> she was just this sweet little southern girl. >> sweet little southern girl? >> yes. it was miss diane. and yes ma'am. and no ma'am. >> okay, i will let the doctor know and he will be in with you shortly. >> angela wilder, was in addition to a nursing student, a mother of three. who, just days before, had revealed to her professor that she was pregnant. >> did you have any advice for her? >> well, we talked about how stressful school is. we talked about her not feeling well. and that is when i told her, yes she is expected to come to class. if she could not, she could call and let me know and we would make other arrangements. >> but that morning? no call. no angela. what's she ill? class was over, before one of dianne students dropped a bombshell. >>, she said, i think it was angela's house when i drove to school and there is police tape around it. a lot of people in hazmat suits. >> and indeed, it was angela's house. this littl

vari valley and amazon estate is a vast, sparsely populated wilderness, its own to brazil. second largest indigenous territory, which sits in an isolated area bordering peru and columbia. with little lawn foresman tension has been high since the federal government created a protected so the size of portugal in 2001 non indigenous locals were banned from fishing and hunting, leading to shootouts between invaders and officials. when a para headed the local environmental agency there. well, there's also been a surge in gang violence between drug traffickers, warring over the valleys, river ways last year and amazon us murder, searched by 54 percent, 11 indigenous groups live involuntary isolation within the chavarria valley representing the country's biggest concentration of indigenous people. about 6000 in all brazilian law says contact with isolated tribes is only permitted as a last resort to save them from disease. well, anna carolina often ito is a legal advisor at amazon wash and she joins us now from. so paolo in brazil and a very warm welcome to the program. let's just