>> axelrod: campaign 2016, tonight, the first democratic battle independent south. hillary clinton seeks to cement front-runner status in the south carolina primary, while bernie sanders looks to his next chances super tuesday. arrest in kansas-- a woman is charged with illegally providing her ex-boyfriend the weapons used in a mass shooting. the zika outbreak. u.s. health officials issue a new travel warning ahead of the summer olympics. and meet "ms. marvel," a popular new muslim superhero whose greatest power may be shattering stereotypes. >> really about who a good

captioning sponsored by cbs this is the "cbs evening news." .>> axelrod: good evening. i'm jim axelrod. the first southern votes are being cast today in the race for the democratic presidential nomination. hillary clinton and bernie sanders are facing off in the south carolina primary where the polls close in less than 30 minutes. exit polls suggest the economy and jobs are the most important issues to voters there. and 70% of democratic voters told us they want the next president to continue president obama's policies. more now from nancy cordes in columbia, south carolina. >> welcome to ward 9. >> reporter: the first southern democrats cast their ballots today in what's expected to be a lo porto sided contest. >> i have known hillary clinton, i guess about 100 years. >> she's very humble. she's calm. >> i think it's about time that we have a female president. >> you want to get a picture together? >> reporter: clinton camped out in the state all week, working to run up the score.

many super tuesday states as possible in three days. clinton will stick to the south, visiting tennessee, arkansas, and virginia. she even popped over to alabama today before returning to south carolina to watch the results. >> so i want to thank the mayor to do-- for doing what he tried to do to raise the minimum wage in birmingham. >> reporter: sanders will and colorado. and while polls show clinton has a big lead in texas, sanders can't afford to ignore the delegate-rich state. that's where he went today and was greeted by a crowd of 10,000. >> i believe that donald trump's idea of dividing us up is a horrific, un-american idea. >> reporter: he wasn't the only one talking about the latest twists in the g.o.p. race. >> you wouldn't know anything about it because you're a lousy businessman. >> i don't know anything about bankrupting four companies.

>> reporter: the voters we met were transfixed, too. >> i don't want my son to look at those debates and think that's the way he should behave in society. >> reporter: malcolm harris is a veteran and former republican. >> it doesn't look like a party. it looks like a w.w.f. fight going on, on stage, and no policies. none. >> reporter: there is a sign that sanders does not expect to close the gap is right behind me clinton will be speaking from that podium tonight hoping to celebrate a big win while sanders, jim, left the state for good this morning. >> axelrod: nancy cordes in columbia. thank you very much. now to the republicans and the sniping between donald trump and marco rubio. what started in thursday night's republican debate is only getting nastier this weekend. here's julianna goldman. >> he couldn't get elected dog catcher in florida. >> he's flying around on hair force one. >> reporter: for the second

rubio hurled the kind of insults more often heard in a school campaign. >> rubio, total lightweight. and little mouth on him, bing, bing, bing. >> donald trump, a con artist, will never get control of this party. >> i see him starting to sweat. thank god he has really large ears, the biggest ears i've ever seen, because they were protecting him. >> the guy with the worst spray tan in america is attacking me for putting on makeup. ( cheers and applause ) donald trump likes to sue people. he should sue whoever did that to his face. >> reporter: rubio is betting on mudd slinging to defeat g.o.p. front-runner, but others in the party fear a trump victory is inevitable. >> it is my honor and privilege to introduce to you the next president of the united states of america, donald trump. >> reporter: as trump rewrites the campaign playbook, he's forging new alliances with

winner, like with chris christi, and maine's governor paul lepage, who according to the "new york times" just last week said a trump nomination would deeply wound the republican party. meanwhile, republican leaders, like senate majority leader mitch mcconnell, are working on a backup plan. the "times" says he's given republican incumbents the green light to break with trump if he's the nominee. but the republican party may be too decentralized. various attempts to stop trump went nowhere, like a superpac proposed in this memo that was circulated last fall to top donors, including billionaire sheldon adelson. "if trump wins," it says, "everyone loses." trump's opponents do seem to have unified around calling on him to release his tax returns to up the pressure. rubio today provided forms showing he and his wife made $2.3 million from 2010-2014 and paid about $526,000 in taxes, but, jim, these are just

they're not the complete returns, like hillary clinton has provided and like mitt romney provided in 2012. >> axelrod: julianna goldman with the latest on the republican side of the race. thank you. senator ted cruz has promisedded to release his tax returns soon, and he's pressing donald trump to do the same. in an interview with john dickerson for "face the nation," cruz suggested trump's refusal to show his returns raises ethical questions. >> why is it a problem if he doesn't release his taxes? >> well, he said in the debate, he said, "gosh, i'm being audited for two years," then he said three years, then he said maybe five years. listen, if there's a problem in his taxes the voters have a right to know because come september, october, the general election, folk in addition the media are going to make a heyday about any problems with his taxes and i think primary voters have a right to know. >> axelrod: you can see the rest of john's interview with ted cruz tomorrow morning on "face the nation." donald trump, marco rubio, and bernie sanders are also

the town of hesston is still reeling two days after a gunman killed three people at a plant plante and wounded 14 of 14 others before police killed him. >> reporter: zach naylor returned to excel industries today for the first time since the shooting, a bullet pierced his foot. >> i'm upset that we lost some close people that we work with every day. it's hard to deal with. >> reporter: three of his coworkers were killed, including his friend joshua higbee, who was trying to save others. >> i would consider him more of a hero than anybody because he else. >> reporter: loretta killed. >> when he didn't answer me, he usually does, and about 10 minutes, i sent him another me." and i never heard another word from him. >> reporter: police say cedric ford's rage was triggered by a protective order taken out by an ex-girlfriend.

he made his way to the plant thursday and fired at random. d.j. britton is in intensive care after he was shot through the leg. the suspect was not only his coworker, his parents' dentist lived two doors down from ford. >> he heard a pop and went straight to the floor, and that's when he realized he'd been shot. >> reporter: ford was a convicted felon. investigators say the weapons he used in the attack, an assault rifle and pistol, were given to him by a former girlfriend, sarah j. hopkins who is now in jail facing charges. her pastor, could vo, said hopkins came to her church while trying to get out of a troubled relationship. >> right now it's awfully easy for sarah to become the face of why this happened. and i know sarah. is broken. >> reporter: hearts are broken throughout this tightknit communities. the machines made at the plant now stand as part of a memorial. and the town will hold a

just a block away from the plant, which is still considered an active crime scene. >> axelrod: manuel bojorquez in the devastated community of hesston, kansas, thank you. it was relatively quiet in syria today, the first dayave brokered cease-fire involving russian and groups. elizabeth palmer is in damascus, where she's been talking to people shocked at the break in the fighting. >> reporter: here in damascus after the partial cease-fire took effect, we did continue to hear sporadic shelling and mort arg from the city suburbs. but overall, day one has gone better than anyone expected, although, of course, there is no official monitoring. we went down into the center of damascus to a park that's both a campsite and a hangout for some of the thousands of syrians who had to flee from other areas. and like everyone else whose lives have been shattered by the war, they hope today's lull might actually somehow lead to lasting peace.

want to go home. throughout the day, there were several reports of violations, rebel groups accuse the army of breaking a truce, but there are no major incidents. russia actually grounded its bombers for the day. but president putin has only promised a 24-hour pause, so it is quite possible those russian planes will be in the air again tomorrow hitting the al qaeda-linked nusra front, and isis fighters. the two groups that were explicitly excluded from this cease-fire. jim. >> axelrod: elizabeth palmer, thank you. this week, a study confirmed the methane gas leak in porter ranch, california, was the largest in u.s. history. more than 100,000 tons of methane leaked before it was capped. the people who live there have been told it is safe to return home, but as carter evans reports, many are still skeptical. >> you guys can play for a minute while i unpack a couple things. >> reporter: sandy crawford has been trying to make this

more than a month. >> are you going to play with me or not? >> reporter: her family, like so many others, was elated when officials last week declared the crisis over. >> the leak in the aliso canyon storage field is permanently sealed. >> reporter: when you drove back into the neighborhood, could you smell the gas? >> no, couldn't smell it. i was hopeful. i thought we were good. >> reporter: but within hours of returning home, crawford says her youngest son had trouble breathing again, and worse. >> i looked at him, and there's just blood down his face. i put it on our facebook group for porter ranch, and the parents are just-- everyone is comingcoming in saying, "we're having the same problems. our kids are having the same issues." >> reporter: crawford says she had no choice but to move back to the hotel. symptoms go away? >> 100%. >> reporter: late this week, a los angeles judge ordered southern california gas to pay three more weeks of hotel bills for residents like crawford. the gas company says that will cost $2 million a day and is

air quality in the area has never posed any long-term health risks and with the leak gone, related symptoms should be gone. what do you think is contammed that's causing this? >> i believe there's something in our house. i don't know if it's the air inside of our house, because we've tried to air it out. i don't know if it's in our mattresses or the drapes. i don't know what it is. i want to be home. we want to be home. our kids want to be home playing with their games and toys and living our normal life. >> reporter: for now, it's anything but normal. carter evans, cbs news, los angeles. >> axelrod: up next, the zika outbreak promptaise new travel warning ahead of the summer olympics. and surge pricing heads to disneyworld when the cbs evening news conditions. song: "that's life"

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they may not compete. >> reporter: the warning about travel to brazil is the strongest one the c.d.c. has issued to date, and it's triggering new concern for athletes planning to attend the games in august. >> at some point i do want to start a family. >> reporter: appearing on "cbs this morning" this week, two-time olympic gold medalist hope solo says she's kicking around the idea of staying home. >> i don't want to be worried. i don't want those anxietys. i don't want the constant tests. >> reporter: the american women's wrestling team was competing in rio just last month. u.s. wrestler adeline gray. >> i think if i was planning on having a child in the next month, i would be extremely uneasy about this. >> reporter: her teammate, alyssa lampy, in an interview with a.p., said she's trying to stay focus on competing. >> i haven't been outside the hotel. it's kind of scary. there's really nothing you can do. >> reporter: most olympicians of are childembargo age, making

dr. william shatner is an infectious disease specialist. do you think there's a scenario in which an athlete should not travel to the olympic games? >> the only scenario that might concern me is if a woman athlete is pregnant or thinks she's pregnant at the time of the games. and then they need on talk about that with their partners, their husbands, and their physicians, and make that decision. >> reporter: at least 400,000 cases of zika has been reported, or have been reported in brazil. here in the u.s., the c.d.c. says there have been 107 confirmed cases, all of them travel related. jim. >> axelrod: marlie, thank you. disney is taking a page from the uberplaybook. starting tomorrow, the company's theme parks will be priced according to demand. the costs will go down slightly in less-busy times of the year, but rise in busy months like july and december. the company says its version of surge pricing is designed to

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vonn hurt her left knee. on instagram she posted it is a hairline fracture but she hasn't yet ruled out returning to competition tomorrow. typically, sea lions keep to the beaches in southern california, but last night, one little sea lion pup went rogue leaving authorities with an adorable reminder of a serious problem. here's contessa brewer. >> reporter: she cried alone, starving in strange surroundings. the tiny sea lion struggled over street curbs, around bicycles, shaking, hiding under cars. san diego police corralled the dangerously malnourished, dei dehydrated eight-month-old until eric ochin from the sea world rescue team arrived. >> we'll get him the help me needs, some fish and stuff. >> reporter: the sea lions are lions are facing a food shortage.

deeper parts of the ocean. . >> females are weaning the pups earlier. >> reporter: and they're struggling to fend for themselvess. earlier this month, another pup was found in a la hoya restaurant. she's lucky. marina has gained almost 10 pounds. 375 have been found stranded this year, far fewer than the 1200 found in the same time period last year. is that good news? >> unfortunately, those numbers are down. because the pups are dying, so they're not making it to the shores where we're rescuing them. >> reporter: a rescue doesn't guarantee survival. as many as 40% still die. but getting them into that crate is a crucial first step. el nino's only part of the problem. experts say they're at a loss to explain fully what's happening. until the crisis ends, they're relying on the public's calls to alert them to stranded animals, and, jim, they say, call, don't touch. >> axelrod: contes athank you very much.

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first stories, it's close to home. >> super hero comics are populated by outcasted, those who don't fit in but protect the world anyway. but there's never been a comic superhero quite like this. kamala khan is just an average teen from jersey city who happens to have shape-shifting abilities. she also happens to be muslim. sana amanat is the series' editor. >> we didn't want to tell a story about a muslim or a south asian, we wanted to tell a story about a young individual coming into their own. >> reporter: to tell that story, amanat drew on her own childhood growing up as a muslim in new jersey. >> i had this one instance right after the world trade center bombing this kid came up to me and was like, "hey, um, can you tell your people to stop attacking us?" it was a big turning point in my life because it was the first moment where i realized i was the other. >> reporter: she found solace in comic books, like the

of mutant who do good in the face of prejudice. in the first issue of "ms. marvel," a nod to an earlier series by the same name, kamala khan shape-shifts into a blond, blue-eyed hero before her father convinces her that she's perfect as she really is. it's a story that resonated with readers everywhere. that issue went through an unprecedented seven printings and was a "new york times" bestseller, with over 20,000 copies. >> first page of the comic is her smelling a b.l.t. in a local convenience store. and fake bakeon is forbidden in islam. it's just a moment where you are trying to be something that you're not. >> diversity has always been really important in comics. >> reporter: john jay professor jonathan gray writes about comics and pop culture. >> that marvel is representing this character at a time when we have some, you know, divisive political rhetoric, i think it shows that we can sort of embrace our diversity and not sort of be turned off by it. >> reporter: "ms. marvel" has been a phenomenon, a sign of the

marvel, the most recent issue of the franchise series "the avengers" features kamala khan, front and center. amanat says their intention was never political. >> we went in to try to tell a unique story, who muslims are and who muslims can be, but really about who a good person is. >> reporter: in these stories, marvel presents diversity as struggle and strength. their corporate motto could well be, "with great power comes great responsibility." don dahler, cbs news, new york. >> axelrod: and that is the cbs evening news for tonight. later on cbs, "48 hours." but first, the polls are about to close in south carolina. for some of you, we'll have a campaign 2016 update at the top of the hour. for now, i'm jim axelrod. thanks for joining us. captioning sponsored by cbs

access.wgbh.org [ music ] >> announcer: the following program is sponsored by operation smile. every year, hundreds of thousands of children are born with cleft lip and or cleft palate. >> dr. bill magee: why should any child, anywhere on this planet, have to live a life of misery. >> kathy majette: a lot of people think that children that are born with these deformities are cursed. just imagine a life alone, that nobody wanted to be around you. >> norrie oelkers: and we had children coming in for screening with brown bags over their head. they're never allowed to leave their house unless they have a bag on their heads. >> kathy majette: some children don't live, because they have problems with eating, and drinking, and die of malnutrition. >> mel: and they see us as their last resort. >> dr. jill gora: every child deserves a fair chance at life, >> peggy stillman: it may only take an hour to do something that will change their lives forever. >> noreen kessler: and you just see a whole new person, a whole new beginning. it's almost like they're reborn.

[ music ] >> axelrod: this is a campaign 2016 update. i'm jim axelrod. breaking news from south carolina. cbs news projects hillary clinton has defeated bernie sanders in today's democratic primary. it is a big win for clinton in the first-in-the-south contest for the party's nomination. our projection is based on exit polls and interviews conducted throughout the day in south carolina. exit polls suggest african american voters and women were major forces behind clinton's victory. let's bring in nancy cordes, who is in columbia, south carolina. good evening, nancy. >> reporter: hi, jim. and the clinton campaign says that her victory here is a sign that she can dominate in the south, and that she can dominate with minority voters, which is