24 hours before the first in the nation iowa caucuses. the final polls show trump and clinton slightly ahead. cruz and sanders are predicting upsets. will a blizzard impact voter turnouts? the teams arrive for super bowl 50, along with hundreds of law enforcement officers for what could be the biggest national security event of the year. a virginia tech athlete charged with murdering a 13-year-old girl. did they meet on social media? students allege racial intolerance at an elite boston

dog sled race, keeping a mushing tradition alive. >> announcer: this is the "cbs overnight news". welcome to "the overnight news," i'm jeff glor. tonight campaign 2016 gets its first reality check when voters in iowa select which candidate will remit them at the democratic and republican national conventions this summer. starting at 7:00 p.m. local time, caucuses will be held across the state. republican voters write the name of their preferred candidate on slips of paper. democrats support candidates in groups. because iowa goes first, it is a highly anticipated event, one that could be complicated by a blizzard due to arrive just as voting begins. our election team starting with major garrett and the republican race. >> reporter: jeff, here at ted cruz's iowa headquarters, the workload is con stand and stakes are high. first place is crucial to blunt

counter a late surge prosecute marco rubio. the cruz and rubio campaigns are pulling out all the stops, including hardball voter turnout tactics. the leader in iowa a month ago, ted cruz, is now running behind donald trump. damaged by trump's canadian birther allegations and charges he's a calculating not consistent conservative. >> we don't view any state as i must win. i think we're positioned to do very well in iowa. >> reporter: the latest bloomberg politics/"des moines register" poll has trump ahead by 28%, cruz 23%. cruz will visit his 99th and final iowa county on monday. cruz has elaborate files on the most reliable voters here, evangelical christians and tea party enthusiasts. the campaign sent this flier to voters with their voter propensity score that looks like a government doult, but isn't. the point, to shame those to caucus for cruz and bring friends listed. >> i've never heard of anything like this. it is to dishonest. >> reporter: trump attended

for the first time, said he would appoint supreme court justices to overturn gay marriage. a big issue for iowa's social quemp conserve conservatives. >> i disagree with the supreme court. it should be a state's rights issues. >> reporter: trump's front-runner stat us and rule-breaking ways allowed him to skip the final televised debate and attract rick santorum and mike huckabee. >> i'm endorsing myself. the first thing out of my mouth that night are donald trump and i are competitors but colleagues when it comes to supporting veterans. >> reporter: santorum told us he's tried to steer clear of trump. >> i think i was pretty clear that night when i stood to the side of the podium and said, i don't want to stand behind a trump sign because i'm supporting another candidate tore president. and i intend to run a vigorous campaign. zoo. i'm nancy cordes.

>> reporter: there is no poll that can tell you -- >> we're calling with the hillary clinton campaign. >> reporter: -- which democrat has the better ground game. >> i'm glad to hear you'll be supporting the governor. >> reporter: in a race as close more important. the candidates made their closing arguments today. >> and there's a big difference between what i believe will work selling. >> reporter: clinton has done more than 100 events in iowa. sanders isn't far behind. >> starts working for all of us, not just the 1%. >> reporter: the newest "des moines register" poll shows the two separated by just three points. that means former maryland governor, martin o'malley, who is polling at 3%, could become a kingmaker. >> i would love to be the second choice of the sanders or the clinton people. >> reporter: caucuses allow supporters to horse trade with one another. come tomorrow night, both the clinton and sanders camps will

to work with him. the longest his people hold out, the more leverage they have. >> my message to the o'malley supporters across the state is this, hold strong at your caucus. >> reporter: his troops know their marching orders. >> i'm holding strong on caucus night. >> the hold strong message is our conviction. >> reporter: nancy is a o'malley volunteer and saw the strategy work before when she was a precinct captain for president obama. >> i remember in '08, went to talk to the biden group, and that only got them to come over. but two other people there ended up being two of my top volunteers for obama. so, it's pliable. >> reporter: and so o'malley's final tally tomorrow night could outstrip his poll numbers if the other two swing supporters his way in an attempt to depress each other's delegate count. it is very complicated, jeff. makes things very unpredictable which is why even at this hour

they are still sending volunteers out into the streets to knock on doors and drum up support. >> thank you, nancy cordes, major garrett and our entire team in iowa. peace talks aimed at ending the war in syria are getting under way in geneva, switzerland. allen pizzey reports as syrians continue to die inside their country and trying to escape. we warn, the footage is graphic. >> reporter: this tushish beach is a long way and no distance at all from the would-be peace talks in geneva. even as the participants argued over whether or not to actually get down to business, drowned children and their families fleeing the conflict washed up on shore. by some counts, 35 times more people have tried to make the perilous crossing to greece, at least 250 are believed to have drowned this month alone.

makes them take the risk. dozens were killed in damascus when a car bomb went off. two suicide bombers then struck rescuers, adding to the carnage. >> syria today is an unfolding humanitarian catastrophe. >> reporter: in a video message secretary of state john kerry peace talks to seize the opportunity to bring an end to the conflict. the talks are supposed to begin in some form on monday. >> this conflict could easily engulf the region. if left to spiral completely out of control. that is what the negotiations in geneva can prevent. >> reporter: but so far, the parties to the talks are refusing to even speak directly to each other. in spite of the messages from ada a damascus suburb. the "cbs overnight news"

two virginia tech students were arrested this weekend in connection with the death of a 13-year-old girl. as jericka duncan reports, police believe she was murdered. >> reporter: police say 13-year-old nicole lovell was abducted by david eisenhauer and they say keepers helped him. today keepers was arrested. blacksburg police detective --

acquainted prior to her disappearance. >> reporter: saturday authorities charged eisenhauer with murder. they found lovell's remains about 100 miles from her home. her family reported her missing on wednesday and say her dresser was pushed up against her bedroom door. a missing child poster noted she required medication daily for her liver. friday, her father posted this message to facebook. >> nicole, honey, if you see this, if you're out there, you can come to me. i'm not mad at you. i'm worried about you. your family's worried about you. just come home. >> reporter: nicole's facebook page shows she was a member of at least one teen dating group, but it's unclear whether she met eisenhauer on line. last march the track and field state champion was honored as athlete of the week by a local news station. >> i will personally not stop until i reach my peak performance.

four days searching for lovell. state police continue to search for evidence on the virginia tech campus. virginia tech released a statement extending its support to lovell's family and friends. police have not released a motive or cause of death. the oobs is autopsy is scheduled for tomorrow. >> thank you very much. the super bowl teams arrived in the bay area today, one week ahead of the big game. the denver broncos landed about an hour before the carolina panthers. behind the scenes, teams of federal and local law enforcement officials are fine-tuning their security plans for the super bowl. john blackstone has an inside look. >> reporter: celebrating the biggest week in football, san francisco is expecting 1 million visitors a day. six blocks downtown has been turned into super bowl city. it's a place where football fans big and small can play interactive games and pose for photos.

line up to go through metal detectors. san francisco's police chief. >> there will be officers in plain clothes, on high ground, but a lot of it will be unseen to the regular person that's just going to come and have a great time in san francisco. >> reporter: law enforcement agencies have been planning for this for two years. coast guard canine units are on hand to screen the crowd for explosives. the fbi brought bomb-detecting robots just in case. dozens of federal, state and local agencies have set up a joint operations center. david johnson is in charge in san francisco. >> really what this facility is for is to collect information, thread information, intelligence, analyze it and get it out to the people that need to know. >> reporter: geography is making security planning more difficult. while many events are taking place in san francisco, levi stadium is 45 miles away in santa clara.

gather for the game next sunday. while fbi officials say there's no known credible threat of a terror attack, an individual working alone can present a clear danger. >> it's all about identifying the lone wolf before he or she acts. hard to find. absolutely, no doubt about that. i think we saw that in san bernardino. >> reporter: part of the security plan depends on all these fans being watchful as well. at every opportunity, jeff, san francisco's police chief repeats the phrase, if you see something, say something. >> john blackstone, thank you. el nino continues to soak parts of california. highway 101 in ventura county was flooded today. conditions at the farmer's open in la jolla were very bad. some parts of the state were expecting up to 3 inches of rain. multiple delays at the golf tournament. that is helpful in battling drought, the rain, but unhelpful in the fight against another insidious problem -- cliff erosion.

>> reporter: relentless el nino-powered waves are taking a human toll. but this crumbling hillside south of san francisco is giving scientists a gold mine of information. the nature conserve ancy has asked drone operators to capture a perspective rarely seen. >> drones provide this really great perspective you can't get safely any other way. we're below the clouds, right near the sea level. and shooting back at the shore. >> reporter: the drones buzzing above this cliff aren't just taking dramatic pictures. they're gathering data to help create a 3-d map of the eroding california coastline. what have you seen along the coastline so far? >> i've seen a lot of destruction. >> reporter: this week george flew his drone in a grid above endangered buildings in pacifica, like this apartment ing edge. >> the high tides are going and

able to predict things like what happened here at the apartment complex. >> reporter: it's a big job. there's 1270 miles of shoreline along california. and scientists have identified several thousand homes that may be in jeopardy during this el nino winter. the work you do here today might here tomorrow. >> hopefully. that's the point. >> reporter: it could eventually help those who never intended to live on the edge. carter evans, cbs news, pacifica. all three inmates who escaped a southern california jail are back behind bars. the last two fugitives who face charges including murder and torture returned to jail overnight. they were captured in san francisco yesterday. a third inmate surrendered friday. this time the men are being kept in separate cells. still ahead, accusations of racial intolerance at an elite boston high school.

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a boston high school known for being at the center of diversity and progressive politics is now at the center of a controversy after students began a social media campaign alleging racial incidents on campus

kenneth craig reports. >> we want to blow up every single social media. >> reporter: when meggie noel and kylie webster-cazeau made this youtube video. the students claim underlying racial tensions in the hallways and online ramped up when ferguson police officer darren wilson was not indicted in the shooting death of michael brown. >> it made students of color really uncomfortable that students who they sit next to in class every single day, who they see in the hallway, whose locker is next to them said these things and thought these things. >> reporter: among their claims they say school officials did not reprimand students who school. using the #blackatbls, they're now encouraging other students to join the conversation. that video has now gone viral and the discussion is expanding. boston mayor marty walsh is

>> the experiences that our kids racism. >> reporter: the district is now investigating. boston latin is the oldest public school in the country, considered a top feeder school for the ivy league with a long list of prestigious graduates. 22 years ago, roughly 23% of the student body was black. today african-american students make up less than 9%. >> whatever happens, we're definitely going to be holding the administration accountable to make sure these things don't persist in the future. >> reporter: the school's head master has laid out a six-point plan to address the issue. jeff, the conversation has taken off with students also joining the discussion from other boston schools. >> kenneth craig, thank you very much. up next here, what soda companies are doing to improve

soda sales have fizzled about 14% in the past decade but cola companies are making moves to turn things around with pepsi opening its first restaurant this week. with jill schlesinger, in part, they're selling this by selling smaller cans? >> yes. it's working. consider it portion control. a lot of americans are trying to cut down on their sugar and they're actually willing to pay more for a smaller size. coca-cola says in the first nine months of last year, small can sales were up by 15% since 2011 large sales are down by 5%. so, they're actually stemming the tide of sliding sales with these smaller containers. >> marketing is always such a massive part of this. coke is spending $4 billion in 2016. >> and it's a retro campaign.

it's aimed at both millenials and boomers. we don't know whether it's going to work, but they're throwing a lot of money at it. pepsi going old school. they're sponsoring the super bowl halftime show again. this seems to work. the combination of the nfl and pepsi. stores say they actually drive traffic. pepsi's marketing machine will drive traffic into the stores. pepsi's happy because they sell more product. they're also trying these new ideas like this restaurant. >> yeah, let's talk about this, this pepsi restaurant. >> it's not called the pepsi restaurant. it's called the kola, with a "k," the kola house and everything is featured around the kola nut, the basis for these sodas. when you look at the ingredients, it goes far afield. you can get vodka infused with bitters. you can get your meat drillsed with truffle oil. it's a far cry from pepsi, chips and dips, but maybe it will work. we'll have to wait and see. >> jill, thanks very much. a golf stroke for the ages

golfer with a hole-in-one on a par 4. it is the first time that has happened in the history of the lpga. 3 under par is anal ba tros or a double eagle. she was pretty excited about, it as you can see.

this is the "cbs overnight news". >> welcome to "the overnight news," i'm jeff glor. the first votes will be cast tonight in the race for the white house. the people of iowa will gather in fire houses, church basements, homes and more to caucus. the latest polls show the race tightening. for the democrats hillary clinton has a three-point lead over bernie sanders. 45% to 42%. for the republicans in the latest poll, donald trump is on top with 28%. is he followed by ted cruz with 23%. and marco rubio with 15%. john dickerson discussed the race with both trump and rubio

>> in iowa, your campaign is based on the idea you're a winner. does that mean you have to win iowa? >> i don't have to win it. right now, you and i are sitting in new hampshire. as you know, i have a substantial lead in new hampshire but i think it would be really good to win iowa. i'd like to win iowa. i'm doing really well with evangelicals in iowa but i'm also doing tremendously well with evangelicals. i'm doing great with the tea party. i'm doing great with all groups. i now have a fairly substantial lead in iowa. i think we have a good chance of winning iowa. >> weeks ago it was tighter in iowa. now you're ahead by a little more. why do you think that is? >> i think ted cruz has been severely affected by the goldman sachs loans, which he didn't disclose and was on his personal financial form and his citibank financial forms he didn't disclose. >> couldn't it be a mistake? >> it's two loans, give me a break. he's supposed to be robin hood. don't forget, he said he sold

much more important is the whole fact he was born in canada. and he was a citizen of canada until 15 months ago. there's much law right now and a lot of constitutional lawyers are coming out. laurence tribe is middle ground, saying it's untested. many top constitutional lawyers are coming out saying ted cruz can't be president because of the fact he was born in canada. i think that has a huge effect. >> at your rallies you say things, and i talk to people who attend your ral lis and they like you're uncompromising. i also talk to washington insiders, some lawmakers, who are overcoming their skepticism about you thinking he's going to compromise, he'll make deals in washington. which is right? >> i think everyone's right. honestly, i think they're both right. i'm tough to make a deal with. but i'm a dealmaker. when i see ted cruz standing in the senate and nobody else is with him, he's standing all by himself, you have all of these

congressmen generally and he's trying to -- he's by himself it's wonderful. i can understand how a radio show host could say, oh, isn't that wonderful? not going to get anything done. have you to get things done. ted doesn't have an endorsement from one united states senator. >> he would say that's great because you have said such washington. >> they're not bad people. a lot of are very good people. some are people that won't get it done. the recent budget that was passeds is a horror show. it is should have never been passed, et cetera, et cetera. when ted doesn't have one senator, like mike lee who's a very conservative guy, good guy, endorsements? i get the endorsements from sarah palin, jerry falwell jr. i have incredible -- even sheriff joe endorsed me. >> those aren't senators. those are -- >> no, but still very important people. as an example, sheriff joe, arizona, toughest guy. he endorsed trump.

i'm toughest on the border. >> why do you think -- have you a lot of working people at your rallies. you have more than any other candidate, you live a life most distant from them. why do they support you? >> because i'm a job producer. i've produced tens of thousands of jobs over my lifetime. right now i'm producing thousands of jobs. that includes health care, education for families. you know, et cetera, et cetera. and i grew up -- my father was a builder in brooklyn and queens. i grew up with people working on houses and whatever. i relate to them. i love those people. those are my people. i love them. i really do. i love the policemen. i love the firemen. for whatever reason, it is strange -- >> even to get to your job, you don't ride three buses and have a second job and all that. >> no, i have the ultimate bus. it's called a 727. now it's a 757, actually, when you think of it. one of the reasons that i'll win and i think none of the other guys will win is because i'm going to get states that they'll never get. i have a good chance of getting

i have a good chance of getting virginia. i'll get pennsylvania. i'll get ohio. i'll get michigan. i'll get florida my numbers just came down. i'm at 48. the sitting senator is at 11 or 12, and a former governor is in the 8s. >> you may be getting a lot of way. how does it feel? >> well, we've always felt great about our campaign here. we continue to feel that it's growing in support. we'll see what it leads to on monday night. ted cruz is clearly the front-runner going into the night. he has 10,000 volunteers on the ground. he's spent an exother tant amount of time here. and has gotten every endorsement he wanted. we know it's a tough hill to climb but we feel good about our campaign and very positive about what it means going into new hampshire. we'll be leaving aas soon as the caucus is over and we'll be in new hampshire ready to work. >> sounds like you're setting expectations to your opponent there. he's calling you the republican obama.

>> other than the fact that i -- it's kind of bizarre. ted is leading in a lot of the polls. he has a vast organization here and has spent a lot of money. his campaign has bragged repeatedly about how well they'll do here. it's strange that at the last moment they've pivoted all their attacks against me. they took a video of an interview i did in 2007 in florida and clipped it so it makes it sound like i support cap and trade. this has already been lampooned and mocked for years because thing. desperation attack. i don't understand why. he's got such a strong organization here in iowa but it's all fine. we feel good about it. >> make it means you must be doing something right? >> we've taken more than anybody else in attacks. jeb bush's super pac has spent close to $30 million on television which is more than

candidate combined. you add ted cruz's attacks. when people don't attack a candidate that has no chance to win. we feel good about it and feel even better it's having no impact and we're continuing to message. we're going to close strong here with our message. we like where that leads. new hampshire and south carolina, which comes up shortly after that. >> let me ask you about those pac. spent a lot of money attacking you. steven hayes of the "the weekly standard" said the lasting legacy of those attacks may be to make donald trump the nominee. what do you think of that? >> well, trump did the i don't believe will be the nominee. that said, yeah, jeb has the right to spend his money any way he wants. i think people have noticed that it's close to $30 million of attack ads against me. i knew that when i got into this race that the establishment, many people in the republican establishment didn't want me to run. they thought i needed to wait my turn or wait in line. but i just felt that after seven years of barack obama, this was no time for patience.

and so i ran and i knew that i would face some of this. this is big dollar checks that were written into that super pac. i'm sure some of the people that wrote those checks are disappointed and others, perhaps, this is what they intended all along. in the end, this election is in

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the iowa caucuses have started every presidential primary season for decades but for people living outside iowa, what actually happens inside a caucus remains a bit of a mystery. nancy cordes in des moines explains it all. >> reporter: so, here is your caucus 101. 7:00 p.m. monday night in more than 1600 precincts across the state, people will gather in church basements, in school gymnasiums and even in private homes. just like a primary, whoever gets the most votes wins, but it's how they get there that's a little different.

know the crowds are always packed. >> god bless the great state of iowa. >> reporter: no matter how many supporters show up at their rallies -- >> i am thrilled to be here at marian. >> the weather is vermont weather. thank you, iowa. >> reporter: the only crowd count that really matters is on caucus night. >> so, there are 20 precincts in west des moines. >> reporter: in des moines clinton supporter, julie, is schooling her fellow caucus captains. >> our ultimate goal, as it says on a number of different papers s to get more people for hillary. >> hi. how are you? >> reporter: they need training because caucuses are a little confusing. >> what's a caucus? >> i mean, why not just vote? >> it means a meaning of chieftains. >> reporter: the good wife tried to explain in a recent episode. >> literally a gathering of neighbors trying to convince each other to support their candidate. >> reporter: even the sanders campaign attempted to sum it up in this facebook video.

>> it's going to be [ bleep ] awesome! >> reporter: here are the basics. for republicans, it's simple. voters express their preference and the process ends there. for democrats, though, it's more complicated. iowans separate into camping according to the candidate they support. any candidate who doesn't hit 15% in that precinct is eliminated and that candidate's supporters can then choose to back someone else. >> approach them with a show of respect for their candidate and for them. >> reporter: a unique process where neighbors convince neighbors to switch sides. >> have you heard about bernie sanders at all? >> reporter: the more precincts you win, the more delegates you get. that plays into the strategy. for the sanders campaign, for example, they have lined up volunteer drivers to take college students from their college towns to their hometowns to caucus. that way his large base of youth support will be more spread out

>> with more on the race in iowa, here's major garrett. great again. >> we need a political revolution. >> reporter: welcome to the presidential campaign that breaks all the rules. >> let me say, i'm a maniac. >> reporter: there's the, you can't say that rule. donald trump breaks it almost daily. >> isis is making a tremendous amount of money. i would bomb the [ bleep ] out of them. >> reporter: no oval office vacancy for socialists. >> bernie! >> reporter: tell bernie sanders. >> a democratic socialist certainly can and will be. >> reporter: and armada of campaign cash and famous last name can never help. >> incomes went up for everybody. >> reporter: then the all men rule. clinton has the best chance in history to break a 240-year-old glass ceiling. presidential politics, governors

supposed to have not built-in advantages. >> i had to make these decisions after 9/11. >> reporter: it worked for george w. bush, bill clinton, ronald reagan and jimmy carter, but not bobby jindal, and scott walker. they've all dropped out. while democrat martin o'malley struggles in single digits. and most bizarre of all -- >> donald trump has chosen not to attend this evening's presidential debate. >> reporter: attendance at a prime time televised debate isn't even mandatory. >> is it for me personally a good thing, a bad thing? will i get more votes? will i get less votes? nobody knows. who the hell knows. >> if i'm elected president. >> reporter: what go governing experience, politicians with the least, ted cruz, marco rubio, trump and even ben carson, have turned that question upside down. the only rule that seems to apply is the old rules no longer apply. >> hi. how are you?

written daily and the improvisational results in iowa and down the road are anyone's guess. by one count there have been 60,000 political ads run in iowa alone. one series of tv commercials is standing out. here's dean reynolds. >> this election is about the essence of america. about all of us who feel out of place in our own country. >> i have spent my life fighting country. >> there are those who say we cannot defeat a corrupt political system and fix a rigged economy. >> reporter: if you're lucky enough to live in iowa or new hampshire, political ads like these are just about all you see on television now. >> hippo-crit. one belose. >> reporter: all while, they all begin to sound the same. >> hi. i'm gil fullbright and those who bank roll my political career

>> reporter: wait. what was that? >> i may not be qualified to be president but a dramatic camera angle can make me look like a president. >> reporter: he's not running for president, he's an actor. it's a satire that's been viewed more than 3 million times on social media. >> ideas, policies, morals. these are things i don't need. what i need is $2 billion. >> reporter: it makes you chuckle but there is a serious point to his pitch. >> he's just shining a light on how politicians are routinely being bribed by special interest lobbyists and swaying their votes in their favor and the people who are left out are, we, the american people. >> reporter: josh silver is the director of represent us, the grassroots organization behind gil fullbright that's working to pass laws combating the influence of monied interests in

silver is talking about the strategy to basically end-run washington and begin by focusing on local government. building a movement from the ground up. >> we know that washington is not going to fix this problem any time soon. they don't fix anything any time soon these days. the only place there's a bright light is in the city and statements. >> reporter: from its office in florence, massachusetts, represent us, brought together an unlikely alliance. the group's advisers include republicans, democrats, prominent members of occupy wall street and the tea party. even disgraced lobbyist jack abramoff who served several years in federal prison after being convicted of conspiracy to bribe members of congress. dan is the political director of represent us. do you find that this is a bipartisan issue? >> i'm a republican.

with the amount of corruption, the fraud, the waste and abuse in government. we're all essentially paying a corruption tax because of the -- of those problems in government. so, we want reform. >> reporter: represent us wants to stop elected officials taking money from special interests they regular. bar them from taking jobs from taking office, at least for several years, limit their donations from lobbyists and force organizations which fund political advertising to disclose their donors. >> we know that politicians are spending most of their time raising money, listening to donors. they need to listen to us. >> reporter: in november represent us backed reforms passed in maine, seattle and san francisco. and there are plans for more ballot initiatives this year. >> hi. >> reporter: honest gil not actually running and you can't actually vote for him. nor could you in the 2014

>> i have a deep-seeded love for kentucky that is directly proportional to the amount of money i raise there, 25%. >> reporter: but he was so successful back then as a fund-raising vehicle for the represent us cause that he's been elevated to the big time. for president? i said, okay, sure, why not? president. >> reporter: gil fulbright will be reminding us of that for the . that's a promise he intends to keep. >> i promise that i will work every day to suddenly misdirect that anger so my big money donors can continue to rip you off. >> "the cbs overnight news" will be right back. aco tuesday. man: you're not coming. i took mucinex to help get rid of my mucusy congestion. i'm go od all day. [announcer:] mucinex keeps working. but 12 hours. let's end this dry spray? that's fun. it's already dry! no wait time. this is great.

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tomorrow is groundhog day. communities across the nation will wake a groundhog judginging will spring is right around the corner. the tradition started in punxsutawney, pennsylvania, in the 1800s, but for one town in wisconsin, the whole event almost ended last year. here's steve hartman. >> reporter: when you think of groundhog day, you probably don't think of sun prairie, wisconsin, but there's as much passion here as punxsutawney. they have a wooden woodchuck in the town square. the local bakery sells groundhog cakes. in fact, the only thing they're missing is a real groundhog. this was the sun prairie grond groundhog. you may remember him from last

his ear, and he took it. >> he suggests -- he says that -- that he didn't see his shadow. >> reporter: shortly after chewing his way through the mayor's ear, the sun prairie groundhog chewed his way through naturally, the town wanted a replacement woodchuck. and who wouldn't, if a woodchuck than done >> you cannot capture it to exhibit it. >> reporter: sun prairie's groundhog day event planner -- >> memorabilia from years past. >> reporter: she says they started celebrating in 1949 using groundhogs they caught. >> it's been a tradition ever since. >> reporter: but now it's not so >> it becomes very complicated. >> reporter: there's more than one license? >> oh, yes, there's more than >> reporter: she says you need one from the state, one from the federal government, and if you can't find a certified groundhog >> so then you would need an import license. >> we're going to be talking

>> reporter: the new mayor says it's hardly worth the effort. not just because of all the red tape or because he's concerned about his own ears. >> after last year -- >> reporter: he says it's simply not humane to hold up groundhogs like we do. no. >> reporter: his proposal? >> he's a wild animal >> reporter: to chuck the entire woodchuck idea completely. >> maybe we'll have somebody in a groundhog costume. >> reporter: what about a gerbil, would you have a problem >> he's domesticated so i >> february 2nd isn't gerbil day. it's a groundhog. we have to have a groundhog. >> that's the way it's always been and that's the way i like it. >> reporter: around sun prairie groundhog of some sort. >> reporter: the consensus is clear. what do you think of a groundhog celebration without no groundhog? >> it would just be winter from there on. and you were worried about climate change. loaner groundhog for next week's

whole year to find a permanent replacement. >> you shouldn't be doing that with a groundhog. >> reporter: and it gives the mayor time, too. how would you propose celebrating thanksgiving? to find a way to balance on his soap box. steve hartman, on the road, in sun prairie, wisconsin. mayor, any time.

24 hours before the first in the nation iowa caucuses. the final polls show trump and clinton slightly ahead. cruz and sanders predicting upsets. will a blizzard impact voter turnouts? the teams arrive for super bowl 50 along with hundreds of law enforcement officers for what could be the biggest national security event of the year. >> virginia tech athlete charged with murdering a 13-year-old girl. did they meet on social media? students allege racial intolerance at an elite boston high school. and largest sled dog race this side of alaska is under way.

as allen pizzy reports, inside their country and trying to escape. we warrant the footage and no distance at all what would be peace talks in geneva. even as participants argued over whether or not to get down to business. children and their families fleeing the perilous crossing from greece compared with january last year. 250 are believed to have drowned this month alone. this is the kind of horror that

dozens of people were killed in damascus when a car bomb went off in a suburb. two suicide bombers struck rescuers attingatting -- adding to the carnage. syria is a catastrophe. >> secretary of state john kerry called on participants to seize the opportunity to bring an end to the conflict. the talks are supposed to begin in some form monday. >> this conflict could easily engulf the region. if left to spiral completely out of control. that is what the negotiations in geneva can prevent. >> so far, the talks are refusing to speak to each other despite the messages from a damascus suburb and turkish the cbs overnight news will

two virginia tech students were arrested this weekend in blacksburg police department mike albert. >> based on evidence collected

were acquainted prior to her disappearance. >> saturday authorities charged eisenhower with murder. police say they found lovell's remains near the virginia north carolina border about 100 miles from her home. lovell's family reported her missing wednesday and say her dresser was pushed up against her bedroom door. a missing child poster noted she required medication daily for her liver. friday her father posted this message to facebook. >> nicole, honey, if you see this, if you are out there, you can come to me. i am not mad at you. i am worried about you. your family is worried about you. just come home. >> nicole's facebook page shows she was a member of at least one teen dating group but unclear whether she met eisenhower on line. last march, the champion was recognized as student athlete of the week by a local news station. >> i will personally not stop

>> investigators spent four days searching for lovell. police search for evidence on the virginia tech campus. virginia tech released a statement extending support to lovell's family and friend. police have not release a motive or cause of death. the coroner's office tells cbs news the autopsy is schedule ford tomorrow. >> thank you very much. the super bowl teams arrived in the bay area today one week ahead of the big game. the denver broncos landed an hour before the carolina panthers. behind the scenes, teams of federal and local law enforcement official are fine tuning security plans for the super bowl. john blackstone has an inside look. >> reporter: celebrating the weekest big in football, san francisco is expecting a million visitors a day. six blocks downtown, has been turned into super bowl city. it is a place where football fans big and small can play interactive games. and pose for photos.

line up to go through metal detectors. san francisco's police chief craig sur. >> there will be officers in plain clothes, high ground. a lot of it will be unseen to the regular person that is just going to come and have a great time in san francisco. >> law enforcement agencies have been planning for this for two years. coast guard canine units are on hand to screen the crowds for explosives. robots. just in case. dozens of federal state and local agencies have set up a joint operation center. david johnson is fbi special agent in charge in san francisco. >> really what this facility is for is -- to collect information, thread information, intelligence, analyze it and get it out to people that need to know. >> reporter: geography is making security planning more difficult. while many events are taking place in san francisco, levi stadium is 45 miles away in santa clara. that's where 70,000 people will

while fbi officials say there is no known credible threat of a terror attack, an individual working alone, can prevent a clear danger. >> all about, identifying the lone wolf before he or she acts. hard to find. absolutely no doubt about that. i think we saw that in san bernardino. >> part of the security plan depends on all of these fans being watchful as well. at every opportunity, jeff, san francisco's police chief repeats the phrase "if you see something, say something." >> john blackstone, thank you. el nino soaks california. highway 101 ventura county was flooded. conditions at the farmer's open in la jolla very bad. some parts of the state expecting 3 inches of rain. multiple deplays laydelays. helpful in battling the drought, the rain unhelpful in the insidious problem of cliff erosion.

>> reporter: el nino powered waves are taking a human toll with the crumbling hillside south of san francisco is giving scientists a gold mine of information. the nature conversancy asked drone handlers to capture a sight rarely seen. >> drones provide a really great perspective you can't get safely any other way. where below the cloud, right near the sea level, and, shooting back at the shore. >> reporter: the drones buzzing above the cliff aren't just taking pictures they're gathering data to create a 3-d map of the eroding california coastline. what have you seen along the coastline so far? >> i have seen destruction. >> this week, george flew his drone in a grid in pacifica. like this apartment building teetering on the edge. >> mapping the coast during high tide will give us an idea of where the high tides are going.

able to predict what happened here at the apartment complex. >> reporter: it is a big job. there is 1,270 miles of shoreline along california. scientists identified several thousand homes that may be in jeopardy during this el nino winter. >> the work you do here today may make it safer for people to live here tomorrow. >> hopefully. that's the point of the whole thing. we can do this now. why not? >> reporter: it could eventually help those who never intended to live on the edge. carter evans, cbs news, pacifica. all three inmates who escaped a southern california jail are back behind bars. the last two fugitives face charges including murder and torture returned to jail overnight. they were captured in san francisco yesterday. a third inmate surrendered friday. this time the men are beg kept in separate cells. >> still ahead, accusations of racial intolerance at an elite boston high school. and, an extremely rare albatross sighting. let's get these dayquil liquid

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boss ton high school at the center of diversity and politics is center of a controversy after students began a social media

incidents on campus. kenneth craig reports. >> all right, every single social media. >> reporter: the two created this youtube video their goal was to draw attention to allegations of racism at their elite school, boston latin which they say had been ignored. the students claim underlying racial tensions in the hall ways and online ramped up when darren wilson was not indicted in the shooting death of michael brown. >> it made students of color feel really uncomfortable, students they sit next to in class every day, who they see in the hallway, whose locker is next to them said and thought these things. >> reporter: among their claims they say school officials did not reprimand students who used racial slurs at school. they're now encouraging other students to join the conversation. >> that video has now gone viral and the discussion is expanding.

supporting them. >> the experiences that our kids have shouldn't be racism. investigating. boston latin is the oldest public school in the country, considered a top feeder school for the ivy league with long list of prestigious graduates. 22 years ago roughly 23% of the student body was black. today african-american students make up less than 9%. >> whatever happens we definite definitely are going to be holding administration accountable to make sure these things in the future. >> the head master laid out a six point plan to address the issue. jeff the conversation has taken off with students joining discussion from other boston schools. >> kenneth craig, thank you very much. up next here, what soda come pans are doing to improve flat

soda sales fizzled 14% in the past decade. cola companies are making moves to turn things around. pepsi is opening its first rest rauntd this rest -- restaurant. here, fighting this by selling smaller cans? >> yes, it is working. considering it portion control. i think a lot of americans are trying to cut down on their sugar. they're actually willing to pay more for a smaller size. coca-cola says in the first nine months of last year small can sales were up by 15%. since 2011, large sales are down by 5%. so, actually stemming the tide of sliding sales, the smaller containers. >> smaller containers. and $4 billion in 2016.

it is aimed at both millenials and boomers. we don't know whether it will work. they're throwing a lot of money at it. pepsi going old school. sponsoring the super bowl halftime show again. this really does seem to work. combination of the nfl and pepsi. stores say they actually, drive traffic into the stores. pepsi is happy they sell more product. also trying new ideas like this restaurant. >> let's talk about this, pepsi restaurant? >> not called the pepsi restaurant. called kola house. and everything is themed around the kola nut, the basis for the sodas. what's really funny when you look at some ingredients here, kind of goes pretty far afield. you can get vodka-infused with kola bitters. get your meat drizzled with kola truffle oil. a far cry from pepsi and chips and dip, but maybe it will work. we'll have to wait and see. >> the next generation. jill, thank you very much.

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