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American Hostage in Yemen Killed While U.S. Special Forces Attempt Rescue; "Rolling Stone" Apologizes for Possible Unreliable Source on University of Virginia Sexual Assault Story; Protests Continue over Police Non-Indictment Eric Garner's Death; Woman in United Arab Emirates Arrested for Murder of School Teacher; New Research Links Sleep Deprivation to Diseases Including Cancer; Janice Dickinson's Ghostwriter Confirms She Wanted to Include Sexual Assault Story Involving Bill Cosby in Memoirs; San Quentin Prisoners Learn Computer Coding

Aired December 06, 2014 - 14:00   ET

THIS IS A RUSH TRANSCRIPT. THIS COPY MAY NOT BE IN ITS FINAL FORM AND MAY BE UPDATED.

FREDRICKA WHITFIELD, CNN ANCHOR: -- how the operators prepare for a mission like this and what could have gone wrong.

Plus, "Rolling Stone" magazine apologizes about its bombshell article about alleged rapes at the University of Virginia. We will look at questions that were raised about the article and how that might impact other rape victims who want to come forward.

And sleep deprivation is killing us. Coming up, I'll talk to a sleep expert about how to get a healthy night's sleep.

Hello, again, everyone, I'm Fredricka Whitfield. Let's get right to our top story, the U.S. hostage rescue mission in Yemen that did not go as planned. We're learning new details about the operation. Here's what we know right now.

A senior defense official tells CNN a team of 40 special forces tried to rescue American photojournalist Luke Somers and South African hostage Pierre Korkie. They were being held by member of the terror group Al Qaeda in the Arabian Peninsula. A senior defense official tells CNN the Navy SEAL team hiked six miles from their drop zone and were spotted just 100 yard away from the militant's compound. That's when a fierce firefight broke out. U.S. officials say one terrorist immediately ran inside the compound and then shot the hostages. The Navy SEALs were able to evacuate Somers and Korkie and a U.S. medical team spent a half an hour on the ground in Yemen trying to save them. One died on the way to a nearby U.S. ship. The other died on the ship. No special forces were killed in the operation.

CNN's Sunlen Serfaty joins us now from the White House with more on this. Sunlen, what more are U.S. officials saying about the timing of this rescue mission and why they had to take action when they did?

SUNLEN SERFATY, CNN CORRESPONDENT: Well, Fred, U.S. officials say the timing was accelerated because their intelligence showed that Somers would be murdered by this morning without any interception by U.S. officials, and today in a statement President Obama really held that up as an explanation why they went ahead and proceeded on this risky mission. He called it an imminent danger to Luke Somers. And he called his murder a barbaric murder. Now today in Afghanistan, the secretary of defense, Chuck Hagel, had this to say.

(BEGIN VIDEO CLIP)

CHUCK HAGEL, DEFENSE SECRETARY: Our prayers and thoughts go out to the Somers' family. There was also another hostage who was also killed in that attempted rescue. And our prayers and thoughts go to all the families involved. I do think, though, that this is further evidence of America's continued commitment to always find its American hostages, no matter where they are, and make every effort to get those hostages returned.

(END VIDEO CLIP)

SERFATY: And President Obama monitored the raid in real time here at the White House last night, and he said again today that the White House used every tool at its disposal to get Somers released. Back to you.

WHITFIELD: And then what more do we know about the South African hostage that was killed?

SERFATY: Yes, this South African man is Pierre Korkie. Now we do know from his employer and a Facebook posting today that they say, the employer is called "The Gift of Givers." They say they were finalizing an agreement for his release on Sunday. The U.S. State Department, they say they did not know this second hostage was South African. They just said that their intelligence shows there were two individuals, so they went ahead with the mission. But again, they said they had no idea the negotiations were taking place for this South African hostage otherwise.

WHITFIELD: All right, Sunlen Serfaty, thank you so much.

So what went wrong with this mission? I want to bring in former Navy seal Jonathan Gilliam. Jonathan, tell us more about the kind of planning that goes into this. To hear that the commandos were dropped and then hiked six miles before their location, this compound, then they were 100 yards away from their final destination, I mean, that is just heart breaking that so much went into this. But give me an idea about the risks involved with an operation like this and what might have gone wrong here.

JONATHAN GILLIAM, FORMER NAVY SEAL: Well, I think now, you know, having seen so much over the past couple months about the bin Laden raid, we, you know, the public knows a lot about these type of snatch and grabs where we try to go in and get a bad guy.

When you are dealing with a hostage rescue scenario, you are not dealing with a bad guy. Now you're dealing with a live good guy that you have to try and go in and get and protect at the same. And that throws a whole another wrench into this problem. And I think you also see the difference going directly on target and then actually patrolling in. but unfortunately, when you get on target, you know, you just don't know necessarily what's going to be there. It could have been a dog that barked. Dogs, I'm a big dog person, but when you're on an operation, they're one of your biggest problems because they recognize everything in a neighborhood that they're used to.

I think that it appears as though the operation went very well except for that point. And I just have to tell you that in my eyes, this was not a failed operation. It was an operation that had a tragic end to it as far as the two hostages dying. But I, myself, if I was a hostage, I want my body coming back, and I would rather be taken out with a gun than, you know, have my head cut off.

WHITFIELD: And, you know, you say this is not a failed operation because it didn't end up in an optimal way, of course, when everyone executed the plan. But how it will be -- how will it be interpreted by those commandos involved? And when they try to reflect on what went wrong, what went right, what are some of the things that they will focus on?

GILLIAM: You always dirt-dive or hot-wash an operation afterwards. We try to plan in the SEAL teams and special operations community, we try to plan for every contingency you can possibly think about. So in a hostage rescue scenario, you know, you are looking, first of all, for proof of life, if they are even alive. You have to get that approval for the operation to go forward. And then you have to actually have a location for them. Those are things that you always have to have.

But when we go in, we do these plans, we really try to look at every single thing that can go wrong. And then we think about those things, we plan for them. Then when we get into a fluid situation, we can think clearer. And I think the way these guys will go back and look at this is they are going to hot-wash it. They're going to go through it. But, you know, these operators, they deal with a job that is so dangerous and a job that does involve death and the change that if you don't do it right somebody will die. So you have to really look at this from a very surgical point just like a heart surgeon or a brain surgeon. Some will live. Some will die. But you get the best shot every time. And the majority of the time we do this, we do it very methodically, unemotionally, and we go through the target. We exploit the target. And we typically get what we're looking for.

WHITFIELD: Jonathan Gilliam, thanks so much for you time. I appreciate it.

GILLIAM: Good to be here.

WHITFIELD: U.S. Defense Secretary Chuck Hagel also had a major military operation announcement while in Afghanistan. He says the U.S. will keep a larger force in the country for the first few months of 2015 than it initially planned to. Hagel says up to 10,800 troops will remain in Afghanistan at the start of the new year. A previous announcement called for 1,000 fewer troops.

(BEGIN VIDEO CLIP)

HAGEL: We will maintain a limited counterterrorism mission against Al Qaeda, because as we draw down the comb mission, we have not forgotten, not forgotten what brought America to Afghanistan over a decade ago.

(END VIDEO CLIP)

WHITFIELD: Hagel says President Obama authorized the change in force size in order to provide military commanders flexibility.

And protests pouring into the streets across the nation. Demonstrators, rather, are angry over the lack of an indictment in the Eric Garner chokehold death, and they are making demands.

(BEGIN VIDEO CLIP)

UNIDENTIFIED FEMALE: What do you want?

CROWD: Justice!

UNIDENTIFIED FEMALE: When do you want it?

CROWD: Now!

(END VIDEO CLIP)

WHITFIELD: The protests largely peaceful, although some, three dozen protesters were arrested in Dallas and Durham, North Carolina, for shutting down roadways, sit-ins and die-ins, blocked major intersections in many large cities including Miami where the sea of headlights and taillights stretched for mile after mile there.

Joining me right now, Nick Valencia. Nick, you were in Staten Island, the very spot where Eric Garner was in that chokehold and died. What has been taking place?

NICK VALENCIA, CNN CORRESPONDENT: Well, just a little saw members of Eric Garner's family show up here to place this wreath right behind me, Fred. This is the exact site, as you said, that Eric Garner took his last breath.

And while we have seen demonstrations and supporters of Garner, those demonstrators have continued to march throughout the city in various locations. It's a stark contrast from the images and video that we have seen over the last couple of days where demonstrators shut down thoroughfares, closed streets. Today out here in Staten Island, as you can tell, it' starting to rain. The rain is picking up, and it's really kept a lot of people indoors. There is as press as there are demonstrators here.

Behind me, you can see this is the spot, as I mentioned, where he died. You see there's candles lit. A wreath was just placed here a little while ago.

As far as what's next, Fredricka, we spoke earlier to some demonstrators members of the National Action Network. They say next week they're planning a national march in Washington, D.C. and they came here to announce that. They also said they will be taking buses, anyone who is interested in going to D.C., they will show up with buses to transport those demonstrators and those supports of Eric Garner. They say this issue and this story is not going away any time soon. Fred?

WHITFIELD: All right, Nick Valencia, Staten Island, thanks so much for that.

"Rolling Stone" Magazine apologizes for it controversial article about alleged rapes at UVA. The fraternity at the center of the article providing new reaction to CNN. That's coming up.

(COMMERCIAL BREAK)

WHITFIELD: American hostage Luke Somers has been killed by his Al Qaeda captives. A U.S. official says a team of about three dozen U.S. commandos, mostly from SEAL team six, tried to rescue the American photojournalist and South African hostage Pierre Korkie from their captors, members of the terror group Al Qaeda in the Arabian Peninsula. They say Somers was shot by one of the terrorists during the raid. Here's CNN's Brian Stelter.

BRIAN STELTER, CNN SENIOR MEDIA CORRESPONDENT: Hi, Fred. This was truly terrible news from Yemen this morning. Luke Somers was 33- years-old. And like so many other young journalists, he was inspired to travel to the Middle East to tell the stories of the people that are affected by the conflicts there. Some of his friends say the Arab spring uprising in 2011 was a specific motivator for him.

And also like so many other you journalists, he was a freelancer, which means he would license his photographs to lots of news organizations. The BBC and Al Jazeera are two of the ones that would feature his photographs.

And some of them are really quite beautiful. You see protests, you see political meeting, you see violence in Yemen, but you also see the ordinary lives of ordinary people there trying to go about their day. Earlier today on CNN one of the other journalists who crossed pathway with him in Yemen, Tik Root, spoke about Luke. Here's what he said.

(BEGIN VIDEO CLIP)

TIK ROOT, PBS NEWSHOUR DESK ASSISTANT: He was really dedicated to Yemen, and he spent, you know, over two years there continuously telling the stories and documenting the people that he met. And really, truly, seemed to enjoy it.

(END VIDEO CLIP)

STELTER: Somers was taken hostage in September of last year. And after this failed rescue mission the secretary of state John Kerry said this about him. I'm going to read it to you. "He was an idealistic young photo journalist who went to Yemen to practice his calling and document the lives of ordinary people there."

Fred, the Committee to Protect Journalists says this is the third death of an American journalists in captivity this year. The first two were Steven Sotloff and James Foley. Fred, back to you.

WHITFIELD: All right, Brian, thank you so much. So for more on who Luke Somers was we're joined by Shawn Gillen. He is a professor of English at Beloit College in Wisconsin and taught Luke. Good to see you, professor. What are you remembering about Luke now?

SHAWN GILLEN, PROFESSOR OF ENGLISH, BELOIT COLLEGE: I remember a young man who was trying to find his way in the world. Like many young journalists he was intensely curious. He was a passionate reader of literature, would often come to my office to discuss things that he was reading. He was known in the community as a warm, sensitive, very friendly young man.

WHITFIELD: So when you heard that he had embarked on being in the Middle East, given the curiosity that he exhibited as a student, it doesn't sound like it was much of a surprise that he would venture to that part of the world in your view.

GILLEN: No, not at all. In fact, you know, I'm incredibly proud is, I think the entire Beloit college community is, that to be associate with and that Luke when somewhere where he could pursue his dreams.

WHITFIELD: The details that we are hearing about this commando reign, and while it seemed like the best laid plans, something went wrong just in the final moments just 100 yards away from the compound where he was being held. What are your thoughts on how this happened, how this went down?

GILLEN: I am grateful that the U.S. government tried to rescue him, to the people involved in it. It sounds like that was tragic for both Luke, the other hostage, and two several people in that community. So I'm glad the government did something to try to save him at least twice. I'm devastated by the results.

WHITFIELD: And I imagine the entire college community is saddened by what happened to Luke Somers at the same time. And anyway, you think his life story, his journalistic pursuits will find its way if any instruction that you will be conveying to the students there?

GILLEN: Oh, yes, I do. Luke joins a long line of Beloit students who are going into journalism and mark their careers by what they did. I am hoping to be a part of a group to launch some sort of scholarship or lecture in his name, but it's very early. But certainly the college needs to connect with his family.

WHITFIELD: All right, Professor Shawn Dylan, thanks so much. We appreciate your memories of Luke Somers.

GILLEN: Thank you.

WHITFIELD: And we'll be right back after this.

(COMMERCIAL BREAK)

WHITFIELD: A daring hostage escape in the Philippines. A Swiss hostage held for two years by Islamist extremists managed to flee his captors during a military raid. According to a military spokesman, the 49-year-old hostage seized one of his captor's bladed weapons and attacked a guard and one of his kidnappers. He was shot and wounded during the escape and is being treated in a hospital.

And we're also learning more now about the woman accused of killing an American teacher in the United Arab Emirates. Authorities there released a video showing the nighttime raid on the woman's home. John Defterios has more.

(BEGIN VIDEOTAPE)

JOHN DEFTERIOS, CNN CORRESPONDENT: The "Reem Island Ghost" now in custody. In a dramatic nighttime raid, heavily armed UAE police stormed the home of the Emirate woman suspected brutally murdering an American teacher and planting a homemade bomb outside an American doctor's hours. Waving guns as they searched the house police nabbed their murder suspected identified only as a UAE national of Yemeni origin in her late 30s.

BOB BAER, CNN NATIONAL SECURITY ANALYST: This murder in the United Arab Emirates was terrorism. I mean, this woman had first gone and tried to kill a doctor, an American doctor. It looks like she was targeting Americans. This woman wanted to kill an American and she did.

DEFTERIOS: Her arrest coming just 48 hours after the gruesome attack on 47-year-old Ibolya Ryan, a kindergarten teacher and mother of three, stabbed to death while shopping at this upscale mall in Abu Dhabi Monday. The suspect, cloaked head to toe in traditional robe and veil, caught on camera entering the woman's restroom and laying in wait for about 90 minutes before stabbing Ryan six times with a kitchen knife, then fleeing the scene.

But Ryan wasn't her only alleged target. Her next stop the home of an American Muslim doctor, where that same day, she allegedly planted a rudimentary bomb outside his home which police disarmed before it could detonate.

This new surveillance video shows the robed assailant carrying a suitcase into then out of this building. Moments later this white SUV is seen driving away. Inside the suspects SUV police find bloodstains on the steering wheel, walkie-talkies, more knives, and what appear to be bomb-making materials. Local authorities believe the victims were targeted based on nationality alone, meant to spread chaos and fear. According to a diplomatic source the woman arrested has traveled back and forth to Yemen multiple times, triggering questions over her ties to terrorist organizations.

BAER: The United Arab Emirates have a very efficient police force. And for these groups to get through is a very bad sign.

DEFTERIOS: The incidents have everyone looking at the videos online and even questioning the role of the UAE as a safe haven. We are already seeing, beefed up security at malls and housing complexes where expats and locals both live together.

John Defterios, CNN, Abu Dhabi.

(END VIDEOTAPE)

WHITFIELD: And back in this country, "Rolling Stone" magazine apologizes for its controversial article about alleged rapes at UVA, the University of Virginia. Hear what the fraternity at the center of the article is telling us next.

(COMMERCIAL BREAK)

WHITFIELD: All right, bottom of the hour now. Welcome back. I'm Fredricka Whitfield. Here are the top stories crossing the CNN news desk right now.

About 40 million people in the Philippines are in the path of typhoon winds. It made landfall with 127-mile-per-hour winds in east central Philippines just before 9:00 a.m. eastern time. Rain is a concern because it may take three days until the typhoon essentially moves out to sea, dumping a whole lot of rain as it goes along.

And we are waiting to see if there might be more protests tonight in New York and other cities. Demonstrators upset over Eric Garner's death and a lack of an indictment against the police officer poured into Macy's in Herald Square and into the Apple Store on Fifth Avenue to staged die-ins. Those protests were peaceful and brief, lasting only several minutes.

And President Obama Barack Obama strongly condemning the killing of an American hostage Luke Somers by an Al Qaeda terrorists in Yemen. The Pentagon says militants with Al Qaeda in the Arabian Peninsula murdered Somers and the South African hostage during a rescue attempt by U.S. NAVY SEALs on Friday. President Obama says he ordered the raid after receiving information Somers life was in imminent danger.

And "Rolling Stone" magazine is apologizing for its controversial article about alleged rapes on the University of Virginia campus. Managing editor Will Dana says, quote, "In the face of new information there now appear to be discrepancies in Jackie's account and we have come to the conclusion that our trust in her was misplaced." According to magazine, Jackie claims she was raped by seven men at the Phi Kappa Psi fraternity while two more gave encouragement during a party. And just a short time ago the fraternity responded.

A spokesman saying for Phi Kappa Psi saying this to CNN, quote, "The allegations were as surprising and shocking to them as they were to everyone else. To my knowledge, no member was contacted by "Rolling Stone" fact checkers," end quote. "Rolling Stone" admits they did not contact the alleged assaulters to get their account.

I want to bring in now CNN legal analyst and criminal defense attorney Mark O'Mara. So Mark, do the fraternity and the UVA now have a case to perhaps sue "Rolling Stone" for libel and slander based on these statements?

MARK O'MARA, CRIMINAL DEFENSE ATTORNEY: Well, potential they do. Actually libel is very difficult. The bigger the organization, the more difficult it is to be a plaintiff in a libel suit. So could they? Yes. This is just an unfortunate set of circumstances they probably want to get behind them as soon as possible, but there may be some civil liability for "Rolling Stone" not doing their due diligence before they come out with such despicable allegations against a fraternity and a few individuals of it.

WHITFIELD: So how do you interpret the apology? Because this comes at least one week after the real firestorm of attention that came from this article in "Rolling Stone" magazine that, a, the fraternity wouldn't come out sooner, that the UVA wouldn't come out sooner and say something about this, and instead it's the "Rolling Stone" that now says it questions the veracity of the centerpiece character of an article.

O'MARA: Well, they didn't do their homework. And now they realize that having not done their homework and coming out with what turned out to be quite a sensational article, that they found out that their research was erroneous. And now they have to sort of get the egg off their face.

WHITFIELD: And so you do believe that there is an ad mission here that they didn't do their homework, or is there a sense of "Rolling Stone" is receiving some pressure from, say, the UVA or this fraternity asking "Rolling Stone" to apologize.

O'MARA: Well, no denigrating my profession, but I think "Rolling Stone" is listening to their lawyers and saying what they have to say without coming out in a full admission of guilt. But it really seems as though just cutting under the surface a little bit with the allegations made the woman that without even looking at the other side, not even addressing the allegations with the alleged abusers that they really left themselves open to this, exactly what happened, which is an incomplete story that now puts them at risk.

WHITFIELD: Well, the article didn't mention names in terms of the alleged assaulters, instead giving nicknames, describing only one from that article where it says Jackie's, I guess, boyfriend or the person that took her to the party and was a part of this gang rape was a junior and worked as a lifeguard at a swimming people. Is that information enough for that person who may be described, to be able to turn the tables and say, you know, it's an incriminating a description enough and that is me, and you never got my account. And so I can sue.

O'MARA: As to that person, yes, if that person exists, somebody who is a UVA lifeguard in that fraternity, because if you think about libel, it has to be someone specific. You can't just say the fraternity of bad people. That's not enough. When you start talking about someone who can then be identified, for example, supposedly, she said that one of the people in her study group. Well, a male in the study group of maybe four or five people is pretty easy to focus it. So the more you can say they're talking about me and nobody else, the more of a lawsuit you have against "Rolling Stone" and for that matter the woman.

WHITFIELD: And so now "Rolling Stone" with this apology, has it absolved itself, has it protected itself in any way against any potential lawsuits by willingly apologizing in this manner?

O'MARA: The idea of making, of being remorseful, of issuing an apology and a correction does minimize tear damage. It doesn't exclude the fact that they are probably going to get sued. But it at least shows that once we found out in good faith we acted to minimize the damage we caused. And that's a concept if tort law, which is what this is, suing people for a wrong. And you do have to go out and admit I did something wrong.

My fear in this case is that the woman who made these allegations that may turn out to be potentially false could have a real negative effect on those other women who truly have been abused, domestic violence or rape, and now are going to be more concerned that this might be the filter they have to make their complaints through.

WHITFIELD: And that was actually my next question, if this now would be a deterrent for sexual potential assault victims who will be reticent about coming forward for fear of something like this, that someone won't believe their or enough isn't being shared.

O'MARA: And it can, because all of these, when you make an allegation of rape, sometimes there is forensic evidence. That's great. When there's not a case like this, it makes it that much more difficult. What I do like, if there is some silver lining to this deceit, if that's what it was by this woman, is that we have now brought it to the forefront. We are now talking again about abusive women on college campuses. And even though she may have lied, we don't know exactly that yet. But even if there was a deceitful maneuver by her, we are now talking about it, and just like we are talking about body cameras on cops, because of Eric Garner, and we are also talking about Mike Brown how cops and young black males have to interact better, regardless, we are now talking about it. And those are very significant conversations we have to have. So the silver lining is that we will start talking about zero tolerance policies for abuse of college girls on campus.

WHITFIELD: Mark O'Mara, good to see you, thanks so much.

O'MARA: Thank you, Fred. Good to see you. Take care.

WHITFIELD: Still ahead, sleep deprivation, everyone has it, right. Guess what? It is killing us. Coming up, I'll speak to a sleep expert about how to get a healthy night's sleep.

(COMMERCIAL BREAK)

WHITFIELD: All right, new research says sleep deprivation can lead to obesity, cancer, Alzheimer's disease, and other problems. It's sounds pretty scary. That's the idea behind a documentary called "Sleepless in America" from "National Geographic" and the National Institutes of Health. The experts say eight hours is what you should be getting. But many of us never do. Matthew Walker teaches at U.C. Berkeley and studies the impact of sleep on our health. Professor Walker, good to see you. Hopefully you got a good night's rest last night.

MATTHEW WALKER, U.C. BERKELEY PROFESSOR: I did, indeed. WHITFIELD: OK. So how is it that not getting enough sleep is

actually killing us?

WALKER: Yes, so a lack of sleep, as you mentioned, is a Significant risk factor for a number of health problems. In fact, if you think of the two most feared diseases in America, and that's cancer and Alzheimer's disease, sleep loss is a risk factor for both of those. First, we know that sleep helps wash away the bad protein that can actually build up to produce the Alzheimer's disease. And that's why it seems to be a risk factor. A good night's sleep seems to cleanse the brain of those bad products.

But we also know there is a link between cancer, and it's a frightening risk. We know that sleep loss increases your risk for developing cancer. But once you have cancer, sleep loss can accelerate the development of that cancer. It's perhaps not surprising to find that the World Health Organization recently classified shift work and the lack of sleep that you get with that type of work as a probable carcinogen, something that can increase that cancerous risk. So a lack of sleep is perhaps the most striking omission in the health conversation today.

WHITFIELD: Oh, my goodness. So that's convincing enough. So now we need to figure out, you are going to help us physical out how we get a good night's sleep. And for starters, your tips. You say you need to set a good time you need to adhere to, a standardized time for going to sleep and waking up. That's tough for us to do in this news business. But for most folks, how do we try to achieve this?

WALKER: Yes, developing that kind of routine, going to bed at the same time, waking up at the same time, really helps train your brain into understanding when to expect sleep. So try not to let that float around, particularly at the weekend. There is always that danger that you sort of want to wake up later, go to bed later. But then on Sunday night you have to drag your brain back to an earlier schedule and it's very difficult. So standardize those times. That's critically important.

WHITFIELD: OK. And then you are telling people, they got to lose the grip on technology, because folks want cellphones near their beds, iPads near their beds. And you say that's a big old no-no.

WALKER: That's right, yes. So the invasion of technology into the bedroom has been one of the most problematic factors in recent times. And taking those gadgets out can help for two reasons. Firstly, they keep you awake throughout the night for very obvious reasons. But also there is the temptation that when you get into bed, you try to right the last few e-mails, maybe you surf the web. And it produces what we call sleep procrastination, that you are tired and you're sleepy, but you push your bedtime because you continue to engage with those devices. So try to keep them out of the bedroom.

WHITFIELD: And then you say there are things you need to do or things you need to stay away from to make sure you're completely relaxed. You need to keep your bedroom cool, 67-68 degrees, don't consume caffeine, alcohol, or smoke even four to six hours before bed. Oh, my gosh.

WALKER: That's right.

WHITFIELD: Is that realistic?

WALKER: It is realistic. Trying to keep a cool bedroom is important. Your brain actually needs to cool down to get into sleep to initiate sleep. And so having a cooler room helps your brain with that. It's the reason that it's so much easier to fall asleep in a room that's too cold than too hot.

But also as you said, alcohol and caffeine are problematic. Caffeine is a stimulant and it drags your brain away from sleep and keeps it active. Alcohol on the other hand is problematic. Many people use alcohol to try and help to get to sleep. Alcohol is actually a sedative, so what you are doing is sedating your brain, and sedation isn't sleep. The other thing with alcohol is that it will actually fragment your sleep, so you will wake up many more times throughout the night. And finally, alcohol will actually block something called REM sleep or dream sleep, which we know is important for things like learning, memory, creativity, even regulating your mood and you emotion. So trying to stay away from those two things four to six hours before bed is critical.

WHITFIELD: All right, all great advice. Hopefully, we can all get a good night's sleep this evening starting tonight after hearing your advice. Professor Matthew Walker, U.C. Berkeley, thanks so much.

WALKER: Thanks so much. Stay well.

WHITFIELD: All right. And he helped Janice Dickinson write her book which was on bookshelves starting in 2002. Now he's coming forward to confirm her claim that Bill Cosby raped her in her words. You will hear what the ghost writer knew and when coming up.

(BEGIN VIDEOTAPE)

DR. SANJAY GUPTA, CNN CHIEF MEDICAL CORRESPONDENT: Watching goalie Greg Ozubko block shots during practice for the Minor League Gwinnett Gladiators, you would probably never guess he's 50-yearols old. You'd also never know that just 16 years ago he couldn't even move without severe pain.

GREG OZUBKO, GWINNETT GLADIATORS PRACTICE GOALIE: When the symptoms started they were pretty debilitating. Turning a doorknob was extremely difficult. Any movement, anything physical was very greatly restricted.

GUPTA: Lacing up skates was out of the question. Greg started playing hockey as a kid.

OZUBKO: Growing up in Canada, it's the next closest thing to religion.

GUPTA: He played through high school and a little in college, but he knew he wasn't going to make the NHL, so he moved on in his life, started a business, got married, and settled down in Atlanta. Goal- tending was even a thought when he was diagnosed with Rheumatoid arthritis in 1998. He started taking medication and was feeling so great that being an NHL spectator motivated him to get back on the ice in 2002.

OZUBKO: One night it just flipped a switch and it just went, you know, I want to go do this again. The very next day I took my stuff out of the attic.

GUPTA: He started by playing pick-up but was determined to learn the new way goalies were playing. He caught the attention of some coaches who invited him to play with an elite group. And then came an invitation to a training camp for the Gwinnett Gladiators on the east coast hockey league. That led to a spot as a back-up goalie.

OZUBKO: In November in 2011 I dressed for my first professional game, which was a profound experience.

GUPTA: He no longer dresses for games. But he still practices with the team when they need. Greg is also liaison to help players half his age appreciate how lucky they are to be playing professionally, a perspective he has drawn on from his own experience.

OZUBKO: When I first started doing this I was 47. And I never would have believed that I would have had an opportunity like this.

GUPTA: Dr. Sanjay Gupta, CNN, reporting.

(END VIDEOTAPE)

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WHITFIELD: There are now 21 women who allege TV mogul Bill Cosby raped them on different occasion over a more than 40 year span. The most high profile of the 21 alleged victims is former super model Janice Dickinson. She invited me to her California home to hear her story about how Cosby assaulted her in Lake Tahoe in 1982 she says. Cosby's attorney Martin Singer issued a statement when her allegations first became public reading like this, in part, "Janice Dickinson's story accusing Bill Cosby of rape is a lie. There is a glaring contradiction between what she is claiming now for the first time and what she wrote in her own book and what she told the media back in 2002." I asked Janice about those claims.

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WHITFIELD: And did you say, but this is my life experience, this is my story?

JANICE DICKINSON, ALLEGEDLY SEXUALLY ASSAULTED BY BILL COSBY: I thought. Yes, Fredericka, I not to have this put in the book because this happened to me. And I wanted to out him and bust him for the rape that took place for me and to describe my spiral, you know, that took place afterwards. I moved out of New York.

WHITFIELD: Do you think HarperCollins ever saw your version, saw that in writing, your draft, those allegations against Bill Cosby?

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WHITFIELD: I caught up with Dickinson's ghost writer who began working with her in 2001 on her book "No Lifeguard on Duty." Pablo Fenjves corroborated Dickinson did tell him about the alleged rape by Cosby years ago but explains why her account would have never been submitted in a written draft let alone published.

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PABLO FENJVES, GHOSTWRITER, "NO LIFEGUARD ON DUTY": She thought it was innocent and she, he told her he wanted to talk to her about her career in film and television. And it didn't quite, that's not exactly what Bill had in mind. She, you know, went into a fair amount of detail. And she was pretty distraught. The memory was, you know, had her pretty shaken up. And I told her, I'm sorry, don't think we can use any of this. We will never be able to get this past the attorneys at HarperCollins. And I apologized. She understood.

WHITFIELD: Did you ever write a draft based on her story and send that draft to HarperCollins?

FENJVES: I did not.

WHITFIELD: Did she know you hadn't done that?

FENJVES: Based on our conversation, I said to her, this is basically going to be impossible to get past the lawyers at HarperCollins. But she also read the draft that I did turn in and she saw that the Bill Cosby material was not a part of it.

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WHITFIELD: So Fenjves explained to me, he took creative license, his words, by instead writing in Dickinson's book, Cosby mad advances towards the model but was rebuffed and that Cosby was a sore loser about it, not a rapist.

And we'll be right back.

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WHITFIELD: Need a computer coder? Well, you might be able to find one in prison. Laurie Segall has more.

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LAURIE SEGALL, CNN MONEY TECHNOLOGY CORRESPONDENT: We're about right now to head into San Quentin. This is high security prison. This is going to be our third time coming back here because of this educational program. We got to know Sam pretty well. Sam keeps this prison running, right, Sam?

UNIDENTIFIED MALE: I'm here hanging out.

SEGALL: He's not hanging out. He keeps everyone in line.

I'm become familiar with this prison, not because it housed notorious murders like Charles Manson but because of a prison entrepreneurs program we followed for the last year.

FLOYD HALL: If can conquer eight years of incarceration I think that I can definitely become an entrepreneur.

SEGALL: In here they learn about technology. They pitch their startup ideas to investor from behind bars.

UNIDENTIFIED MALE: My company For Real Bawlers is looking for that right next great sports story.

SEGALL: And now they're learning a new language. This is code 7370. Right now they're actually learning how to code behind bars?

UNIDENTIFIED MALE: Yes.

SEGALL: It's a six month course now offered by the last mile, the California non-profit that teaches prisoners technology and entrepreneurship.

UNIDENTIFIED MALE: I see this program as actually giving me the skills so when I get out, I have a marketable skill, to where I can go out directly from prison into the workforce.

SEGALL: When you have been behind bars for decades, you are not exactly on the forefront of cutting edge technology.

UNIDENTIFIED MALE: I have been there 19 years, since 1995.

SEGALL: Since 1995. Had you touched a computer before this?

UNIDENTIFIED MALE: Never.

SEGALL: Here's another challenge. Prisoners don't have Internet access.

CHRIS REDLITZ, THE LAST MILE: As a coder, that is sort of critical. So we had to come up with a curriculum and a process that we could simulate a coding environment without actually having an online experience.

SEGALL: It's a lot. They code four days a week, eight hours a day to build out their future.

UNIDENTIFIED MALE: My dream job is to build apps. I'd like to be computer programmer.

SEGALL: Behind bars they'll be able to make a real salary.

REDLITZ: There is no reason why we can't teach someone in San Quentin, there's many smart people in San Quentin, to be a very proficient coder. SEGALL: Some inmates in this calls will never step foot outside these

bars. But for the ones that do, the technology skill set can be a game changer.

DAMON COOKE: We are creating things from scratch and we're able to build on our ideas and say, wow, we can take this and go out. And now we see a future, we see hope.

SEGALL: Laurie Segall, CNN MONEY, San Quentin state prison.

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