in peru vimplt experts are investigate aing disturbing mystery washing up on its beaches. at least 877 dead dolphins have been found. crews deputy environment minister says the dolphins may have died from a veers. official test results are expected next week. i'll see you back here at the top of the hour. sanjay gupta m.d. begins right now. >> hey there, and thanks for joining us this morning. lots do get to, including a new push to end medical research on chimpanzees. a very controversial issue. plus, the man behind the music of drake. his very own producer on living with m.s. what that's like. fist, a look under the microscope. as you may have heard, the military has long been under fire for ignoring sexual assaults, but this week the pentagon's top man, defense secretary leon pin edda, announced a new crackdown. the main thing is that accusations will be investigated by senior officers. not just yoon it commanders. the pentagon says last year alone, last year, 19,000 sexual

assaults in one year. most of them went unreported and unpunished, and there's more to that. we spoke with several former service women, and this one story we found was typical. she was a marine. she reported a o an attack by a fellow marine. instead of finding help, she was drummed out by the military. >> doing the right thing was in 21-year-old stephanie schroeder's blood. >> i joined shortly after 9/11. i thought it was the right thing do do. i come from a military family, and i have a great sense of honor and patriotism towards our country. >> six months after enlisting in the marines, she found herself training in a base in virginia. one saturday she decided to blow off steam with some fellow marines. >> we went out to dinner. i got up to go to the rest room, and my attacker followed me and forced his way boo the bathroom. i went to pull the door shut, and he grabbed it and flung it

back as hard as he could. he charged into the bathroom and slammed the door hinted him. >> back on base schroeder reported what happened to the officer in charge. >> i told her i need to report an assault, and is he she just looked at me and she started laughing and said don't come bitching to me because you had sex and changed your mind. >> schroeder says she took a lie detector test about her assault and passed, but charges were never filed against her attacker. in fact, she was forced to work with him side-by-side for over a year. meanwhile, her rank was reduced and her pay was docked shes all because of the ens dent. >> if you want to keep your career, you don't say anything. you just bare it. you just deal with it. >> dealing was a struggle. in early 2003 five months pregnant with her now husband in

iraq schroeder felt suicidal. she went to see an on base psychiatrist. >> the fist time he was very nice. the second time we got into the assault, and then shortly after that the chain of command said, well, we're starting an administrative discharge against you. >> on june 30th, 2003, schroeder received her discharge papers. the reason given for separation? personality disorder. a disorder that the textbook for psychiatrist defines as a longstanding pattern of maladaptive behavior beginning in adolescence or early adulthood. >> it makes absolutely no sense medically for people to be diagnosed all of a sudden after being sexually assault as an adult in the military to say, no, you have had this all along. >> this is a former marine, and also executive director of service women's action network. it's a veterans advocacy group. >> it's also extremely convenient to slap a false diagnosis on a young woman or man and then just get rid of

them, right, so you don't have to deal with that problem in your unit, and, unfortunately, a lot of sexual assault survivors are considered problems. >> schroeder is not the only one. in fact, we spoke to multiple women in all branches of the u.s. military who tell similar stories. >> my name is -- >> my name is peni -- >> these women were all willing to go public telling us how after they reported sexual assaults, they were all discharged for psychiatric disorders. for schroeder, the discharge was a mixed blessing. >> once i finally got it right at moment, i was just so relieved and just so happy that it was over. yeah. >> but it also came with a price. because of her discharge, schroeder lost the chance to attend college under the g.i. bill. she's luckier than many other women who even lost their v.a. health benefits. >> you know, people say the rape was bad, and it was, but the

aftermath was worse. >> reporter: today the 30 yefrld mother of two still suffers from anxiety and depression. she's fighting for a ptsd diagnosis from the v.a. >> when i look back at that, that is just so shocking that they could dehumanize anybody like that. >> well, i'll tell you, we had a chance to get a question about all of this, and specifically this diagnosis issue to defense secretary leon pinetta. that was at this week's press conference. take a listen to what he wrshsd. >> obviously, our goal here is to try to put in place what we need in order to deal with these cases as we move forward. there are procedures within the department of defense that allow these individuals to raise these concerns and determine whether or not they have not been treated fairly. >> the pentagon also gave us a statement saying any service member who thinks their discharge status is unfair, such as being diagnosed with personality disorder, should appeal it through a discharge

review board. i want to stay on top of this particular story. coming up, though, the push toent medical research using chimpanzees. the concern is this. some stay is could derail the hunt for cures.

>> come on up, guys.

>> you are watching a clip from the new documently "chimpanzee." a piece of the profits will go to the jane goodall institute to protect wild chimpanzees. i'll tell you, here in the united states chimps are at the strf a big controversy. the question, should they be a part of medical research? there are more than 900 chimps in research centers around the united states as things stand now, and genetically about 99% the same as people. doctors once thought disease and medicine would affect them the same way, but it turned out that's not entirely true. one research field where chimps play a big role is hunting for a vaccine for hepatitis c. even that is controversial, and now the united states is on the verge of banning all chimp research. cnn's john zerella has the story. >> reporter: chimpanzees. for decades researchers have used them to test everything from the toxicity of pesticides and hairsprays to finding cures for cancer, aids, and hepatitis. they are poked and prodded,

given dangerous drugs. researchers say tissue sample from their livers, kidneys, and bone marrow. now there is an intensifying debate over whether it is era of chimp research should end. depend whoing you ask, it would either be disastrous for public health or no big deal. >> i just think that at the end of the day when you start looking at the dollars, you look at the ethics, and you look at the science, the answer here is that chimpanzees are no longer a valid or useful in a research context. >> i think we have a moral obligation. i think we have an ethical obligation to use every tool that we can in order to advance medicine, in order to advance vaccines for the benefit of the public. >> reporter: legislation sitting in congress would end all invasive research using chimps. and a pivotal study by the institute of medicine, iom, concluded the use of chimps is "largely unnecessary." in response the national institutes of health, nih, asked

a panel of experts to tell it to how to proceed. it doesn't have to follow the recommendations, but it's expected they will. there are approximately 1,000 chimps in research institutions. a change in the law could require the retirement of all of them. with no crystal ball into the future, the nih thinks retiring all of them would be a very bad idea. >> we don't know the future. there would be maybe a reemergence of new disease and epidemic for which it's necessary to do research on chimpanzees to save human lives. >> one of the questions that was addressed by the irm is do we need chimpanzees in case there's a bioterror threat or any of the rest of it, and the experts at the iom panel said you're crazy. there are not enough chimpanzees. it would take far too long. they're far too difficult to use. brirchlgts there's no deadline for congress to push, but the panel should make its

recommendations by the end of the year. that could spell the end of most chimp research. i guess the question remains will chimp research be replaced by other types of experiments? like using stem cells, for example, before the expert panel makes its recommendations. tune in to cnn presents this sunday night and see the rest of john's report. still ahead this morning right here on sgmd the man behind the music of drake. alicia keys, lil wayne. noah 40 shabib. struck with a disease that could take away his ability to make music. up next, cyclists killed by cars. one mother says police are simply looking the other way. w that one week later i wasn't smoking. [ male announcer ] along with support, chantix is proven to help people quit smoking. it reduces the urge to smoke. some people had changes in behavior, thinking or mood, hostility, agitation, depressed mood and suicidal thoughts or actions while taking or after stopping chantix. if you notice any of these

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we're back with sgmd. i'm training for a triathlon, and i tell everyone to be active and getting on a bike is a great way to do it. you know, it can also be kind of scary. in fact, check out some of the headlines recently in new york city. keld by a 21-year-old driver who had six prior traffic convictions. for shamoon's death he got -- emmanuel tash, he was kited by a driver who was reportedly texting and speeding. that driver got community svrs. then there's matthew lafave, another cyclist killed by a car. his mother told me she doesn't buy the official story. >> the surveillance video shows the waning moment of a young man's life. just before midnight on october 18th, 2011. a crane truck pulls up to an intersection in brooklyn. moments later so does 30-year-old cyclist matthew lafave shown here. within seconds lafave is dead.

>> we were devastated when we heard the news, and we are still devastated. >> reporter: ericas it's not just her son's death that is devastating. it's the battle she has waged for more than six months against the new york city police department. >> after this awful task of having to identify your son, you go to the police precinct, and are you looking for answers? >> we just wanted to know what happened. >> what do they tell you? >> we had waited at the precinct for hours. we were just brushed off. it wasn't important. >> the sense that a cycling death is not important is a common sentiment and a source of outrage here. in 2010 in new york city there were more than 6,000 traffic accidents involving cyclists. 36 died. but as in the lafave case, virtually no criminal charges against the drivers. navigating new york city is sort

of like an urban jousting match. have you pedestrians who at times jay-walk, cars speeding, even through red lights. a lot of people out there breaking the law. advocates say they are angered by what they perceive to be a biassed against bicyclists. last year the nypd gave more than three times as many criminal court summons to bike riders as it gave to truck operators. >> while there may be some law breaking among the cycling population, very few, if any of those, transgregss of the law are resulting in death or serious injury. >> i know that right over there that's where he was hit, and then his bicycle was dragged down for another 171 feet. >> reporter: according to lafave, when information about measure son's case has trickled out, it showed stunning gaps in the investigation. at first the nypd claimed that matthew ran a red light, but that was later disproven by a surveillance video. >> it's frustrating beyond

description to be handed videotape that shows the death of our son to watch it over and over and over and yet never see the events the authorities claimed it shows. >> reporter: and there were vital clues that could have implicated the truck driver for a hit-and-run that were missing from the police report. >> the truck had this blood and paint evidence on the front bumper, but the camera stopped working. rirchlgt steve acaro is the lafave family physician. >> they did not document that. >> the nypd is not taking crash investigation seriously and is not prosecuting motorists even when the evidence clearly shows they were violating a traffic law. >> reporter: we repeatedly tried asking the nypd about the la fave case and their policies regarding cycling investigations. we got no response. at the coroner where matthew lafave died, a ghost bike. a haunting reminder of life

lost. >> does it hurt to talk about? >> when you lose a loved one, you want to talk about them all the time. >> i'm so sorry. >> because that's one of the ways that he stays with you. but, on the other hand, it is difficult to talk about it because of the pain that you feel. >> erica lafave hopes that the truth, some semblance of resolution about matthew's case, might ease that pain. >> coming up, for anyone in new york or really anywhere, if you ride, you do need to ride safely. it can be done. we'll show you how. hi, yeah. do you guys have any crossovers that offer better highway fuel economy than the chevy equinox? no, sorry, sir. we don't. oh, well, that's too bad. [ man ] kyle, is that you? [ laughs ]

[ man ] still here, kyle. [ male announcer ] visit your local chevy dealer today. right now, very well qualified lessees can get a 2012 equinox ls for around $229 a month.

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riding a bike in a city can be pretty intimidating, especially if you're a first-time rider, especially in a city that has lots of cars, may not have bike lanes. maybe you feel a little wobbly on the bike. i decided to ask some questions of former new york city firefighter matt long. there are so main things people should be doing as they get on the bike. >> absolutely. there's never enough ways to be safe. first one and foremost is your helmet. so many times you see people riding in the park or out on the roads without a helmet. just doesn't make sense. >> you see helmets cracked and you know what that person's skull would have looked like. what next? >> making your bike visible. if you're going to run before the sun comes up or after the sun goes down, have a light on the front and back. they suggest a white light in front and red light in back. one of extra precautions, you can put a light on your helmet,

so you have visibility high and low. >> what does it mean to be mindful on the bike. >> you know, being absolutely clear of what's around you. if you're not familiar with the area, it helps if you are because you know when the intersections are coming, but there are so many obstacles and if you're going 15 to 20 miles an hour, you can't assume you have the right-of-way. you can't assume they know you're coming. >> a lot of things people don't know are just the rules of the road. interacting with cars and other folks on the road. what do you tell them about those rules? >> if the road narrows, the cyclist has the right to the lane. >> is that right? >> that is the law. you should pull into the middle lane, let that car behind you see you. now you're visible. just ride until you can get over. >> thanks a lot. appreciate it. >> no problem. tune of "lullaby and good night" ] ♪ af-lac ♪ aflac [ male announcer ] find out more at... [ duck ] aflac! [ male announcer ] ...forbusiness.com.

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multiple sker sclerosis is most commently diagnosed in middle aged women. i want to share with you a story of a young man who was diagnosed in his early 20s and who is determined to help educate a younger generation. kn noah doesn't miss a beat or a chance to perform. >> i'm your best friend. >> he began as a child actor including an episode of tv's "good bumps" and "the virgin suicides." by his teenage years it was music that proved to be noah's true calling. >> everyone in the studio would fall asleep and wake up in the morning and i'd still be awake

in front of the computer so they started calling me 40 days and 40 nights because i didn't sleep. >> 40 soon attracted the attention of up and coming hip-hopper drake. ♪ >> now a grammy nominated recording artist. >> we worked together for a couple days in the studio i think. i charged him a little bit of money. by the third day we sort of agreed we were going to take over the world together. >> then a monumental setback. 40 found himself celebrating his 22nd birthday in the hospital. >> i woke up one day and all the temperature in my body was distorted. a sense of hot and cold was very confusing thing. for your body in general to understand what's going on, you go into a little bit of shock. >> the diagnosis, multiple sclerosis. 40 spent the next two years trying to get back on his feet. >> i think one of the biggest struggles anybody with ms has is trying to define it to people. this morning, for instance, i

had to lie down on my bed to get my socks on because i couldn't bend over. >> used to be able to carry sofas on his back and stuff like that. to this person who couldn't walk. that was like mind boggling. >> his mom remembers the advice she gave her son. >> you can be a person with ms who doesn't fulfill his dreams or you can be with a person with ms who fulfills his dreams. >> two years later another setback. noah's mom was also diagnosed with ms which is not directly inherited. >> i've got this disease, i'm going to live with it, i'm going to win with it, and my story is going to be that much better when i get there. >> today he is there, right there on a massive electronic billboard in new york city's times square. he's in a campaign for the national ms society. >> that's the whole point. all we can really do is connect and create a network or a community to help each other, you know, because we don't have

the answers to what the cure is or to how it's going to get better. >> that's why 40 is sharing his story. >> these are things i enjoy. i like these challenges, and they maybe get a little more difficult because of my disease, but as long as i'm on my feet i will continue to run until somebody stops me. >> such an inspiring young guy. if you thought his mom looked familiar, you're right. you might recognize her better as miss shields in "a christmas story." >> a red ryder bee bee gun. >> don't shoot your eye out, kid. remember that? check out this roadside sign from the boston marathon which was this week. high heat warning there, slow pace, walk. the temperature was 87 degrees.