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there's just four days until new hampshire holds the first in the nation primary. and a new poll shows bernie sanders and donald trump with commanding leads. for the democrats, it's sanders over hillary clinton 58% to 36%. although clinton has closed the gap slightly over the last few days. the candidates held a debate last night in new hampshire. here's some of what they had to say. >> it is just not achievable. let's go down a path where we can actually tell people what we will do.

that's what i intend to do. >> senator sanders, you spent nearly two decades in congress and haven't gotten any of these things past. why do you think as president you'll be able to achieve big, new programs? >> i haven't quite run for president before. [ applause ] let's deal with some of the comments that secretary clinton made. and by the way, you know, sometimes there's a lot of drama here. i've known secretary clinton for 25 years and respect her very much. here is the issue. every major country on earth, whether it's the uk, whether it's france, whether it's canada, has managed to provide health care to all people as a right and they are spending significantly less per capita on health care than we are. so i do not accept the belief

america can't do that. i do not accept the belief that the united states of america and our government can't stand up to the rip-offs of the pharmaceutical industry, which charge us by far the highest prices in the world for prescription drugs. number two, in the economy today, everybody understands that we need a well-educated workforce. this is 2016. when we talk about public education, it can no longer be k through 12th grade. i do believe that public colleges and universities should be tuition free. well, how do we pay for that? it's an expensive proposition. i do believe we should substantially lower student debt in this country. which is crushing millions of people. we pay for it by a tax on wall street speculation. the middle class bailed out wall street in their time of need. now it is wall street's time to help the middle class.

donald trump leading marco rubio by 11 points. that's a seven-point improvement for rubio, putting him ahead of ted cruz. trump is looking for a comeback and major garrett is there. >> reporter: donald trump is learning retail politics means more than selling hats and t-shirts. >> okay, let's go. >> we love you. >> reporter: it means mingling with voters, something trump rarely did in iowa. >> got to do it. it's called crunch time. >> reporter: crunch time is right and trump's ad hoc ground game is playing catchup. he's led every poll here since july, but today would not predict victory. >> i don't think in terms of losing. that's why i'm here right now. i think we're going to do well. >> donald trump is very rattled right now. he told the entire world he was going to win iowa. >> reporter: iowa caucus winner ted cruz is trying to maximize

marco rubio. rubio picked up rick santorum's endorsement yesterday. but this morning santorum did senator. >> list one accomplishment that marco rubio has achieved in four years in the united states senate. it doesn't even have to be a passed bill. >> the bottom line is, there isn't a lot of accomplishments and i don't think it's a fair question. >> reporter: rubio down played santorum's comments. >> i wouldn't expect him to be familiar with my record. >> we're electing a president of the united states. not a back bench tore the united states senate. >> reporter: jeb bush has made an issue of rubio's lack of experience all week. today the super pac supporting featuring former president george bush. >> i know jeb. i know his good heart and strong backbone. >> reporter: scott, top republicans here say trump can win without the organization

hampshire. >> major garrett for us in new hampshire. thank you. speaking of jeb bush, he finished sixth in iowa, and he's at 10% in new hampshire. well, today, norah o'donnell spoke to him and his mother, former first lady barbara bush. >> just a few years ago you said no more bushes in the white house. >> funny. i knew you were going to bring that up. and i said it because it is such a sacrifice for his family, but now i know he is so needed that he has to run. >> you can see more of norah's interview with jeb and barbara bush tomorrow on "cbs this morning." hillary clinton's campaign has been facing questions about her decision as secretary of state to use an unsecured computer server in her home for official e-mails. some of those e-mails turned out to contain top-secret information. well, today we learned that clinton is not alone, and we asked nancy cordes to look into

>> i will be a better president. >> reporter: clinton suddenly finds herself in good company. according to an internal state department review, two of former secretary colin powell's personal e-mails also contained classified information, as did ten e-mails from the personal accounts of top aides to his successor, condoleezza rice. >> most of them i think are pretty benign. >> reporter: like clinton, powell exclusively used a personal account as secretary of state, though he e-mailed far less often. in a statement today he said the the two e-mails in question were -- the clinton campaign happily sided with him. press secretary brian fallon. >> this is an example of over- classification run amok. >> reporter: the state department announced last week that 22 of clinton's e-mails which sat on her private server

as top secret, one of the highest levels of classification, higher than the secret and confidential designations given to the powell and rice e-mails. have already been put in those categories. isn't there a big difference between an e-mail or two being classified as confidential and 22 e-mails being classified as top secret? >> these e-mails that have been judged top secret are completely wrong. we want them released. let the public see them. >> reporter: the fbi is still looking into clinton's use of a private server, but, scott, the clinton campaign views this as a rare positive development in a year-long controversy. >> nancy cordes with the clinton campaign. nancy, thank you.

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today several hundred people paid final respects to 13-year-old nicole lovell of blacksburg, virginia. there was a hearing today for one of two virginia tech students who are charged in her stabbing, and don dahler is following the case. >> reporter: natalie keepers' parents left the montgomery county courthouse after a judge denied their 19-year-old daughter's bail, and the prosecutor, mary pettitt, laid out new details of the case against her. pettitt described how keepers and fellow virginia tech student david eisenhauer carefully planned the murder of 13-year- old nicole lovell, whom he met online.

on her phone. the prosecutor said the college students plotted her murde at fast-food restaurant. they then bought cleaning supplies at one walmart store and a shovel at another. investigators say the girl was murdered january 27th, the same day she climbed out of her bedroom window to meet eisenhauer. she was killed on a remote road north of virginia tech. the prosecutor said that after the girl was dead, the two put her body into the trunk of eisenhauer's lexus and drove to north carolina where they dumped it by the side of a road. pettitt said keepers confessed to her role in the girl's death. prosecutors did not reveal a motive but said keepers was excited to be part of something special with eisenhauer. scott, keepers' parents told the court that she has mental health issues. >> don dahler, thanks. still ahead, quarterback cam newton, the super bowl star,

super bowl 50 is sunday on cbs. our special correspondent and super bowl pregame host james brown sat down with panthers' quarterback cam newton for "60 minutes sports." >> reporter: other north carolina athletes that you have a relationship with, those with north carolina roots, michael jordan, stephen curry and others like lebron james, what one something did you take away from those relationships? >> their professionalism.

single time i see michael jordan. and steph curry is a person that has really embarked upon elite status in nba history. and i'm not too proud to ask from lebron to, you know, michael jordan, to steph curry or even yourself that i need help. you know what i'm saying? i'm not perfect. anything that you can tell me, anything that anyone else can tell me that may help me in my growth, i want to hear it. >> reporter: when they signed you to that contract, they said it was because they felt you land. you're like moses now. you're at the doorstep. will you be joshua and take them into the promised land is the >> i'm hoping. i'm hoping. i can't promise anything. i can tell you this, there's going to be a person out there

and living the dream. >> and this evening j.b. is in super bowl city in san francisco. i wonder, cam newton gets a lot of flack for his celebrating after touchdowns. what does he make of that? >> you know, scott, he's quite puzzled by the extent of the reaction to his celebrations on the field. it is atypical for a quarterback to be quite so demonstrative, but he'll be first to tell you, enthusiasm is what has gotten him to this point. as a matter of fact, my high school coach says nothing great is every accomplished without enthusiasm. he's embracing it. they're at the doorstep of a super bowl championship. >> well, a lot of enthusiasm for the game this weekend. james brown, thank you very much. and you can see j.b.'s full interview with cam newton on "60 minutes sports." that's tuesday night on showtime. well, if you were anywhere near a dance floor in the '70s and '80s you know the music of maurice white. do you remember >> he was the founder and leader

their mix of soul, jazz, funk and disco sold more than 90 million albums and won a grammy for white's "got to get you into my life." maurice white has died of parkinson's disease. he was 74.

this is the "cbs overnight news." >> welcome to the "overnight news." i'm anna warner. there's just four days to go until new hampshire holds its first in the nation primary. and a new poll shows bernie sanders and donald trump with commanding leads. for the republicans, trump has the support of 36% of likely voters, followed by marco rubio with 15%, and iowa winner ted cruz at 14%. for the democrats, bernie sanders is leading hillary clinton 58% to 36%. sanders and clinton held a debate last night in new

here's some of what they had to say. >> but the numbers just don't add up from what senator sanders has been proposing. that's why all of the independent experts, all of the editorial boards that have vetted both of us have concluded it is just not achievable. let's go down a path where we can tell people what we will do, a progressive is someone who makes progress. that's what i intend to do. >> thank you, secretary. senator sanders, just explain how you spent nearly two decades in congress and haven't gotten any of these things past. why do you think as president you'll be able to achieve big, new programs. >> i haven't quite run for president before. [ laughter ] [ applause ] let's deal with some of the comments that secretary clinton made. and by the way, sometime there is's a lot of drama here. i've known secretary clinton for 25 years and respect her very

here is the issue. every major country on earth, whether it's the uk, whether it's france, whether it's canada, has managed to provide health care to all people as a right, and they are spending significantly less per capita on health care than we are. so i do not accept the belief that the united states of america can't do that. i do not accept the belief that the united states of america and our government can't stand up to the rip-offs of the pharmaceutical industry which charge us by far the highest prices in the world for prescription drugs. number two, in the economy today, everybody understands that we need a well-educated workforce. this is 2016. when we talk about public education, it can no longer be k-12th grade. i do believe that public colleges and universities should be tuition free.

it's an expensive proposition. i do believe we should lower student debt in this country. we pay for it in my view by a tax on wall street speculation. the middle class bailed out wall street in their time of need. now it is wall street's time to help the middle class. >> look, i've just got to jump in here, because honestly, senator sanders is the only person who i think would characterize me a woman running to be the first woman president as exemplifying the establishment. [ applause ] and i've got to tell you that it is -- it is really quite -- it's really quite amusing to me. people support me because they know me. they know my life's work. they have worked with me and many have also worked with senator sanders. at the end of the day, they

can get things done. i am not going to make promises i can't keep. i am not going to talk about big ideas like single payer and then not level with people about how much it will cost. a respected health economist said these plans would cost $1 trillion more a year. i'm not going to tell people that i will raise your incomes and not your taxes, and not mean it. because i don't want to see the kind of struggle that the middle class is going through exemplified by these promises that would raise taxes and make it much more difficult for many, many americans to get ahead and stay ahead. that is not my agenda. >> senator sanders, you have 30 seconds to respond. [ applause ]

establishment is, in the last quarter having a super pac that raised $15 million from wall street. that throughout one's life raised a lot of money from drug companies and other special interests. to my mind, if we do not get a handle on money in politics, and the degree to which big money controls the political process in this country, nobody is going to bring about the changes that is needed in this country for the middle class and working families. >> yeah, but i think it's fair to really ask what's behind that comment. you know, senator sanders has said he wants to run a positive campaign. i've tried to keep my disagreements over issues as it should be. but time and time again, by insinuation, there is this attack that he is putting forth, which really comes down to, you

donations or speaking fees from any interest group has to be bought. and i just absolutely reject that, senator. and i really don't think these kinds of attacks by insinuation are worthy of you. and enough is enough. if you've got something to say, say it directly but you will not find that i ever changed a view or a vote because of any donation that i ever received. and i have stood up and i have represented my constituents to the best of my ability and i'm very proud of that. so i think it's time to end the very artful smear that you and your campaign have been carrying out in recent weeks -- [ crowd booing ] -- and let's talk about the issues that divide us -- >> let's talk about the issues. >> we both agree with campaign

>> let's talk about issues. >> i worked hard on that. i want to reverse citizens united. >> let's talk about issues. let's talk about why, in the 1990s, wall street got de-regulated. did it have anything to do with the fact that wall street provided to spend billions of dollars on lobbying and campaign contributions? well, some people might think, yeah, that had some influence. let's ask why it is that we pay by far the highest prices in the world for prescription drugs and your medicine can be doubled tomorrow and there's nothing that the government can do to stop it. do you think it has anything to do with the huge amounts of campaign contributions and lobbying from the fossil fuel industry? let's talk about climate change. do you think there is a reason why not one republican has the guts to recognize that climate

to transform our energy system? do you think it has anything to do with the koch brothers and exxonmobil pouring money into the political system? that is what goes on in america. [ cheers and applause ] >> the "cbs overnight news" will

the plunge in oil prices over the last few months has saved americans a lot of money, whether it's for gasoline or home heating oil. but for some, it's a calamity that's destroyed communities and cost thousands of jobs. martha teichner reports for sunday morning. >> reporter: hallelujah. >> a lot less coming out of my pocket. >> i love it. >> reporter: gas under $2. >> i'm thrilled.

last year, falling pump prices put an extra $150 billion in american's pockets. the price of oil has dipped below $30 a barrel. it's all good, right? one big boost to the economy. what does this symbolize? >> the crash. >> reporter: well, not so fast. in west texas, $30 a barrel oil means a deepening economic disaster. what is this? >> it's a drilling contractor's yard. >> reporter: during the boom, like? >> empty, completely empty. >> reporter: to oil field consultant mike rsaco, this parking lot for drilling rigs symbolizes the american oil and gas industry going broke. in just the last year, more than 900 rigs were idled.

so each one of these rigs represents how many unemployed people? >> i would say a thousand each. >> reporter: each one? >> absolutely. >> reporter: how many do you think are sitting here? >> we quit counting when they got into the 30s. >> reporter: on the road between midland and odessa, it's all there to see. the collateral damage caused by low-price oil. the auction lots for heavy equipment no longer needed. for the repossessed cars and trucks for the people who have lost their jobs. the pump jacks that aren't pumping. >> a gallon of water is worth more than a gallon of crude oil right now. >> reporter: really? >> absolutely. that's another drilling rig north of town. >> reporter: until he was laid off last spring, mike made $1700, $1800 a day overseeing projects for a major oil company.

industry has cut more than 275,000 jobs. since oil prices peaked at over $100 a barrel in mid 2014. why? for starters, demand for oil fell. in the past, opec has cut production in response. not this time. >> before the oil price collapse, the assumption is that opec would underpin the oil price by cutting production. but the key oil producers in the gulf, saudi arabia and the other gulf states, said we're not going to cut unless other people cut. >> reporter: daniel yergen is vice chairman of ihs, an international information company. and the pulitzer prize winning author of "the prize, a history of oil." >> saudi arabia's basic strategy is to maintain its market share in the global oil market, and that's been the starting point for them. >> reporter: at the expense of everybody else? >> yes.

game of chicken. with saudi arabia and its opec partners pumping full blast. russia, too. and the united states. you've heard of fracking? pumping water into shale formations to free hard-to-get at oil and gas. well, fracking meant that the united states suddenly was producing a lot more oil. so much that for the first time in 40 years, we're exporting it. >> u.s. oil production went from 5 million barrels a day in 2008 to 9.7 million barrels a day in april of 2015. in other words, u.s. oil production almost doubled in a matter of just a few years. >> reporter: during the good years, midland and odessa, texas turned into boom towns. same story in williston, north dakota.

entrepreneurs borrowed billions of dollars to buy into the bonanza. workers flocked to the oil patch. >> i heard about all this big money. so i thought i could get a little piece of that pie, i suppose. >> reporter: so many they had to live in trailer camps. on cots in church halls. then the price crashed, thanks in large part to china's slowing economy. meanwhile, every day the world is producing something like a million and a half more barrels there's an ocean of it out there. in massive storage tanks. and right now, at least 100 million barrels are sitting in tankers, parked at sea. mike rasco just wants to hang on to his home. he never lived lavishly, even when he could have, so he could

born and raised in west texas, this is the fourth bust he's lived through. he knows it will end. as he looks for work every day, he just wonders when. >> i'm out of pride. i've got a beautiful wife and two good babies to take care of. i'll be a good oilman when it on top of your game. by eating healthy, drinking fluids, and getting some rest. these simple remedies with airborne. no other leading immunity brand gives you more vitamin c. plus it has a specially crafted blend of 13 vitamins, minerals and herbs. so when you want to support your immune system, take airborne, and enjoy living well. (cell phone rings)

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cbs sunday when the denver broncos take the field against the carolina panthers. the mile high city and charlotte, north carolina are two very different places. but which is more super? we sent john blackstone and michelle miller to find out. >> last time denver was in the super bowl, i headed up to seattle to tour that city. get what? the seahawks won. so this time i'm here to offer a little leverage and to let you know, michelle -- >> let me know, john. >> that denver is a city that will always be on top. >> that is well and good, john, but panther pride runs deep in the south. and though no city can lay claim to this team that's headed to the super bowl, charlotte, which is where the city is based, has been working on a victory all its own. >> okay. >> keep pounding. that's the catch phrase of

charlotte. among the fastest growing cities in the south. >> sorry if i'm looking down on you, michelle, but denver is the mile high city. and talk about growth, about a thousand people a week are moving here. and it's the number one choice for millennials on the move. >> if you're planning to move in a new sofa for your big super bowl watch party, consider this -- 60% of all american furniture in homes originate in north carolina. >> yeah, that's nice, michelle. but not a whole lot of sitting here in denver, when it's sunny about 300 days a year, people are outdoors. that may be why denver is among america's fittest cities. >> john, have you even tried the barbecue here in north carolina? charlotte mayor jennifer roberts has. >> and we're here at spoon's barbecue, one of charlotte's

>> if you're craving a cheese burger, denver's mayor michael hancock tells me this american favorite was originally created right here in denver. i understand you have a bit of a wager going on with the mayor of charlotte. >> after the broncos win super bowl 50, mayor roberts will have to wear this peyton manning jersey in public. in fact, you might as well take it now. >> let's hope peyton manning doesn't throw like that. >> let's hope he does. i know we have a bet. i'm not going to wear a broncos jersey. you're going to be wearing a cam newton jersey and some lovely cam newton socks are going to look wonderful on you when the broncos lose. >> nice shins. but really, cheese burgers? want to burn off some of those calories on a golf course, no better place than the carolinas where north and south carolina are among the top ten places to play. and here at quail hollow club, it's hosting the 2017 pga championship.

>> that's good to know, michelle, but colorado is in the top ten, too. and because of the altitude, the air is thinner here, your ball will go 10% further. >> you want to talk altitude? let's talk about the wright brothers who launched the age of aviation from the carolina coast. >> well, there are plenty of historical places here in downtown denver, like union station, which has recently -- what's that noise? >> oh, i'm sorry, john. is this bothering you? it's so addictive, this bubble wrap. the company that makes it, right here in north carolina. >> bubble wrap? here in denver, you could pop into a marijuana dispensary. since pot was legalized here in 2012 for recreational use, it's become a billion dollar business. >> marijuana is not legal here in the carolinas, not even for

but moonshine is. >> mvp punch. >> mmm. well, before prohibition, the bootleggers used to tote this stuff around and they came up with another carolina tradition -- nascar. >> here we go! whew-hoo! so, richard petty, mr. king. >> you've been around here a few times. how do you think it went? >> a little slow to begin with, but a little more practice, you'll be right deld in there. >> need to spend some more time in carolina. >> no nascar here, michelle, but there's beer. >> cheers. >> thanks, jason. denver brews more beer than any other city in the country, breweries like this one. and bear with me, michelle, while i tell you that colorado

national endowment for the arts. for visits to museums, theaters, and concert venues. who wouldn't want to come see a show here in red rocks? and i will wait, i will wait for you it's a perfect sunday morning in my quiet little mountain town >> and we can also thank denver for the animated community of "south park." >> but here in north carolina, it's a real place. and let's not forget the state also is home to one of the very first public universities. unc. and its tobacco road rival, duke. which is the alma mater of our own charlie rose. he still has a home here in henderson, where he grew up. and really, isn't that all that matters? yes, i'm going to carolina in my mind

broncos or the panthers who come out on top on sunday, the real winning city will be right here in san francisco. it's proved a remarkable host and it's a place i'm proud to call home. >> that's so sweet. sounds like a great way to concede to carolina.

a new health emergency has been declared in another big florida county, as concern grows that the zika virus can now be spread through blood transfusions. also tonight, trump looking for a new hampshire comeback. >> it's called crunch time, right? the smirk that irked members of congress. >> i know you're smiling, but i'm very serious, sir. and a sunday kind of love between women and the nfl. >> there's just something about football. it always keeps you on your

this is the "cbs overnight news." a health emergency was declared in a fifth florida county because of zika virus, which is suspected of causing birth defects. broward county includes fort lauderdale. florida is reporting at least 12 cases, but in all more than 51 people have been infected in 12 states and the district of columbia. conditions in the sunshine state are especially conducive to zika. mark strassmann is there. >> reporter: zika anxiety pushed teams of mosquito-control sprayers into miami-dade neighborhoods today. florida's hot, humid client puts its 20 million residents at risk for the virus along with millions more tourists. governor rick scott. >> we're a state that has mosquitoes similar to mosquitoes that could carry this, so it's better to get ahead of this. >> reporter: scott has asked the centers for disease control, or

kits here. the state will buy 4,000 more. testing would focus on pregnant women who are especially vulnerable. the virus has been linked to a birth defect called microcephaly. babies are born with abnormally small heads and brains. there is no zika vaccine, and no antidote. dr. walter tabachnick, an expert on infectious diseases. >> i think we have to take this so seriously that we must do everything possible to reduce the chances of getting zika. >> reporter: floridians often live with standing water where mosquitoes breed, but residents are being urged to get rid of it, inside in flower vases and water tanks, and outdoors in empty pails, clogged gutters or wherever water pools. the cdc has advised pregnant women to postpone traveling to 30 countries and territories, including mexico. >> so, i'm 16 weeks pregnant. >> reporter: erica benstock declared her own state of

she has canceled her trip next month to cancun, where she was supposed to be matron of honor in her sister's wedding. >> now that it's in the state of florida, how far is it going to spread and what does that mean for everybody who isn't traveling? >> reporter: because you could stay home... >> ...and still get it. >> reporter: 80% of zika patients show no symptoms. scott, it's likely there are many more cases than the official numbers indicate. >> mark strassmann in tampa tonight. mark, thank you. the cdc says zika is spreading in these 26 countries and territories in the americas. in addition to mosquitoes, it's transmitted through sex, and we learned today, blood transfusions. dr. jon lapook has been reporting all week from ground zero of the outbreak in brazil. >> reporter: here in brazil, donated blood is not yet tested for zika virus. instead, donors are asked if they've recently been ill, but since 80% of people with the

reporting misses most infections. in brazil, the virus is predominantly spread through mosquitoes, but in the united states, nearly all the reported cases are imported from travelers. that's why the major blood banks say people should not donate blood if they have traveled in the last 28 days to mexico, the caribbean, south or central america. dr. darrell triulzi, the director of transfusion medicine at upmc. >> if the deferral will take care of the great majority of the risk, so i think by far the benefits of transfusion would outweigh the very small risks of an infected unit. >> reporter: there is a test called pcr that can detect zika virus in the blood, but it's not government approved in brazil or in the united states, where about 21 million units are transfused each year. >> we keep the virus here frozen. >> reporter: researcher rafael franka has been studying zika

this laboratory in brazil. >> we have the machines and the technology and people to do that. we need to make sure we have solid results. >> reporter: so there's nothing really stopping you from testing every blood transfusion for the presence of zika virus? >> yeah, true. we just don't have enough time actually. >> reporter: if mosquitoes in the u.s. get infected, travel history alone would not be an effective screening method. if that happens, scott, the chief medical officer for america's blood center says testing donor blood for the presence of zika virus would be considered. jon lapook in brazil for us tonight. john, thank you. today, in the water emergency in flint, michigan, the epa said lead levels are dropping and home filters appear to be working. but that isn't true everywhere, as our adriana diaz discovered. >> we have this information sheet from epa >> reporter: epa agents have

homes where lead levels remain stubbornly high. joe ragnone's tap water has the city's second highest amount of lead on record. it's classified as toxic waste. >> does it look like that water is contaminated? >> that looks like regular water? >> right. only to find out you got over 5,000 -- >> reporter: parts per billion. >> parts per billion. so this is the reason why we never really even considered our water being bad. >> reporter: old and corroded lead pipes in some homes are still releasing lead into the drinking water. since january 1st, 364 homes of the more than 5,000 tested exceeded the federal lead limit of 15 parts per billion. 48 topped 150 ppbs. mark is leading the epa's effort in flint. overall is water safer here for flint? >> safer since last fall? >> reporter: uh-huh? >> we don't have the data to be able to say that yet. so we're hoping, but again, that's why we're here.

we're trying to evaluate the health of the system. >> reporter: concern for lead levels in children's blood is still high. today state health officials released the latest data. they show 2.5% of children have elevated blood lead levels. last year at this time it was 2.1%. parents continue to bring their children in for blood testing, fearing developmental delays and behavioral issues. >> it's just a bad situation. we just worry. >> reporter: 34 members of the epa are on the ground conducting tests at homes with the highest lead levels. scott, today officials announced they want every child in flint under six years old tested for lead by april 1st. >> adriana diaz. adriana, thanks. well, there was quite a scene on capitol hill today. martin shkreli was there, the former drug company executive who became a poster boy for price gouging and was later arrested on unrelated fraud charges.

drug prices. >> on the advice of counsel, i invoke my fifth amendment privilege. i invoke my fifth amendment privilege. i invoke my fifth amendment privilege against self- incrimination and respectfully

there's just four days until the new hampshire primary. and a new poll shows bernie sanders and donald trump with demanding leads. clinton has closed the gap slightly over the last few days. the candidates held a debate last night in new hampshire. here's some of what they had to say. >> it is just not achievable. let's go down a path where we

will do, a progressive someone who makes progress. that's what i intend to do. >> senator sanders, you spent nearly two decades in congress and haven't gotten any of these things past. why do you think as president you can? >> i haven't run for president before. [ applause ] let's deal with some of the comments that secretary clinton made. and by the way, you know, sometimes there's a lot of drama here. i've known secretary clinton for 25 years and respect her very much. here is the issue. every major country on earth, whether it's the uk, whether it's france, whether it's canada, has managed to provide health care to all people as a right and they are spending significantly less per capita on health care than we are. so i do not accept the belief

america can't do that. i cannot accept the belief that the united states of america and our government can't stand up to the rip-offs of the pharmaceutical industry, which charge us by far the highest prices in the world for prescription drugs. number two, in the economy today, everybody understands that we need a well-educated workforce. this is 2016. when we talk about public education, it can no longer be k through 12th grade. i do believe that public colleges and universities should be tuition free. well, how do we pay for that? it's an expensive proposition. i do believe we should substantially lower student debt in this country. we pay for it by a tax on wall street speculation, the middle class bailed out wall street in their time of need. now it is wall street's time to

>> a poll out this evening shows donald trump leading marco rubio by 11 points. that's a seven-point improvement for rubio, putting him ahead of ted cruz. trump is looking for a comeback and major garrett is there. >> reporter: donald trump is learning retail politics means more than selling hats and t-shirts. >> okay, let's go. >> we love you. >> reporter: it means mingling with voters, something trump rarely did in iowa. >> got to do it. it's called crunchtime. >> reporter: runchtime is right and trump's ad hoc ground game is playing catchup. he's led every poll here since july, but today would not predict victory. >> i don't think in terms of losing. i think we're going to do well. >> donald trump is very rattled right now. he told the entire world he was going to win iowa. and then he can't win. >> reporter: iowa caucus winner

momentum to catch trump and beat back a challenge by marco rubio. rubio picked up rick santorum's endorsement yesterday. >> list one accomplishment that marco rubio has achieved in four years in the united states senate. it doesn't even have to be a passed bill. >> the bottom line is, there isn't a lot of accomplishments and i don't think it's a fair question. >> reporter: rubio down played santorum's comments. >> i wouldn't expect him to be familiar with my record. >> we're electing a president of the united states. >> reporter: jeb bush has made an issue of rubio's lack of experience all week. today the super pac supporting bush released it a tv ad. >> i know jeb. i know his good heart and strong backbone. >> reporter: scott, top republicans here say trump can

that ted cruz, john kasich and jeb bush have devoted to new hampshire. speaking of jeb bush, he finished sixth in iowa, and he's at 10% in new hampshire. well, today, norah o'donnell spoke to him and his mother, former first lady barbara bush. >> just a few years ago you said no more bushes in the white house. >> funny. i knew you were going to bring that up. and i said it because it is such a sacrifice for his family, but now i know he is so needed that he has to run. >> you can see more of norah's interview with jeb and barbara bush tomorrow on "cbs this morning." hillary clinton's campaign has been facing questions about her decision as secretary of state to use an unsecured computer server in her home for official e-mails. some of those e-mails turned out to contain top-secret information. well, today we learned that clinton is not alone, and we asked nancy cordes to look into

>> i will be a better president. >> reporter: clinton suddenly finds herself in good company. according to an internal state department review, two of former secretary colin powell's personal e-mails also contained classified information, as did ten e-mails from the personal accounts of top aides to his successor, condoleezza rice. >> most of them i think are pretty benign. >> reporter: like clinton, powell exclusively used a personal account as secretary of state, though he e-mailed far less often. in a statement today he said the the two e-mails in question were -- the clinton campaign happily sided with him. press secretary brian fallon. >> this is an example of over- classification run amok. >> reporter: the state department announced last week that 22 of clinton's e-mails which sat on her private server for years are being reclassified

highest levels of classification, higher than the secret and confidential designations given to the powell and rice e-mails. more than 1,500 clinton e-mails have already been put in those categories. isn't there a big difference between an e-mail or two being classified as confidential and 22 e-mails being classified as top secret? >> these e-mails that have been judged top secret are completely wrong. we want them released. let the public see them. >> reporter: the fbi is still looking into clinton's use of a private server, but, scott, the clinton campaign views this as a rare positive development in a year-long controversy. >> nancy cordes with the clinton campaign. let's get these dayquil liquid gels and go. but these liquid gels are new. mucinex fast max. it's the same difference. this one is max strength and fights mucus. mucinex fast max. the only cold and flu liquid gel that's max-strength and fights mucus.

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today several hundred people paid final respects to 13-year-old nicole lovell of blacksburg, virginia. there was a hearing today for one of two virginia tech students who are charged in her stabbing, and don dahler is following the case. >> reporter: natalie keepers' parents left the montgomery county courthouse after a judge denied their 19-year-old daughter's bail, and the prosecutor, mary pettitt, laid out new details of the case against her. pettitt described how keepers and fellow virginia tech student david eisenhauer carefully planned the murder of 13-year- old nicole lovell, whom he met online.

on her phone. the prosecutor said the college students plotted her murder at fast-food restaurant. they then bought cleaning supplies at one walmart store and a shovel at another. investigators say the girl was murdered january 27th, the same day she climbed out of her bedroom window to meet eisenhauer. she was killed on a remote road north of virginia tech. the prosecutor said that after the girl was dead, the two put her body into the trunk of eisenhauer's lexus and drove to north carolina where they dumped it by the side of a road. pettitt said keepers confessed to her role in the girl's death. prosecutors did not reveal a motive but said keepers was excited to be part of something special with eisenhauer. scott, keepers' parents told the court that she has mental health issues. >> don dahler, thanks. still ahead, quarterback cam newton, the super bowl star,

super bowl 50 is sunday on cbs. our special correspondent and super bowl pregame host james brown sat down with panthers' quarterback cam newton for "60 minutes sports." >> reporter: of the north carolina athletes that you have a relationship with, those with north carolina roots, michael jordan, stephen curry and others like lebron james, what one something did you take away from those relationships?

here i am, i'm in awe every single time i see michael jordan. and steph curry is a person that has really embarked upon elite status in nba history. and i'm not too proud to ask from lebron to, you know, michael jordan, to steph curry or even yourself that i need help. you know what i'm saying? i'm not perfect. anything that you can tell me, anything that anyone else can tell me that may help me in my growth, i want to hear it. >> reporter: when they signed you to that contract, they said it was because they felt you could get them to the promised land. you're like moses now. you're at the doorstep. will you be joshua and take them into the promised land is the question? >> i'm hoping. i'm hoping. i can't promise anything. i can tell you this: i there's going to be a person out there on super bowl sunday prepared

>> and this evening j.b. is in super bowl city in san francisco. i wonder, cam newton gets a lot of flack for his celebrating after touchdowns. what does he make of that? >> you know, scott, he's quite puzzled by the extent of the reaction to his celebrations on the field. it is atypical for a quarterback to be quite so demonstrative, but he'll be first to tell you, enthusiasm is what has gotten him to this point. as a matter of fact, my high school coach says nothing great is every accomplished without enthusiasm. he's embracing it. they're at the doorstep of a super bowl championship. >> well, a lot of enthusiasm for the game this weekend. james brown, thank you very much. and you can see j.b.'s full interview with cam newton on "60 minutes sports." that's tuesday night on showtime. well, if you were anywhere near a dance floor in the '70s and '80s you know the music of maurice white. do you remember

of earth, wind, and fire. their mix of soul, jazz, funk and disco sold more than 90 million albums and won a grammy for white's "got to get you into my life." maurice white has died of parkinson's disease. he was 74.