don dahler, cbs news, new york. >>> let's take you to wall street now find out how stocks are doing on this wednesday. right now, it's metza-metza up about 6 points. >>> sports authority will close nearly a third of its stores after filing for bankruptcy today. the company's been struggling. in january it disclosed it had missed a $20 million debt payment. 140 stores will close over the next three months. sports authority was once the largest sporting goods retailer in the country. >>> let's check in with roberta right now. it's quiet. but sun is coming? >> we have our storm door opening. good afternoon, this is a look at our weather watchers people in our microclimates with weather stations. maybe you have one, too. everybody is reporting 60s and 70s. 73 degrees so says steve in los altos. he has a dropping barometer. good indication that rain is moving in. meanwhile, he says hard to believe that rain is coming. but it is! it's true, it is hard to believe, steve. live hi-def doppler radar not picking up rain yet. look up north. not much there, as well. right now, we have pretty clear

." >>> welcome to the overnight news, i'm don dahler.lican presidential field continues to narrow. ben carson who hardly made a blip in the super tuesday primaries and caucuses is effectively ending his campaign. carson says he sees no path forward and will skip tonight's gop debates in detroit. the debate will be hosted by fox news, and this time, front-runner donald trump says he'll be there. trump skipped the fox debate in iowa over his dustup with moderator megyn kelly. but since then, he has been on a roll. major garrett reports. >> if this was a typical campaign, donald trump and his party would move together towards nominating convention. trump and rivals remain at odds, and some in the gop want to block trump's path. a split without precedent in modern politics with a resolution no one can predict. >> it looks like we could win, six, seven, or eight, or nine. >> reporter: trump used the ballroom at his gawdy mar-a-lago resort as a backdrop. >> it's only too bad winner didn't take all. if winner took all this thing is over. trump

don dahler reports. >> reporter: this is a link-in kiosk. there are about three dozen running, with the goal being 7500 stationed around the city. as you can see, it has a touch screen pad here. we can have internet access. it has high speed wi-fi for your device, charging ports, even a 911 emergency button if you get into trouble. but the question is, if more people use public wi-fi, does that put more people at risk to hackers? these aren't your daddy's phone booths. in fact, they're replacing them. colin o'donnell helped design the system. >> along with maps, you've got the internet. you can browse the web, find information. >> reporter: and it makes regular phone calls? calls, talk as long as you want anywhere in the u.s. >> reporter: at the nerve center, technicians remotely monitor usage. designed for the rigors of city life, the 1,000 pound aluminum kiosks have been tested to withstand everything from bad weather, to a parking accident to dog pee. other cities have tried and failed at public wi-fi, because of a lack of funding. he say

instead they're looking at the pacific northwest as don dahler will report in our cover tori. a 9.0 earthquake and tsunami devastated eastern japan in 2011. and scientists say it's a question of when, not if, it happens here in the pacific northwest. >> this would be like five or six katrinas all at once up and down from california to canada. >> cowan: ahead on "sunday morning." a really big one. how do you go from a high school student who doubted her looks to a grammy-winning pop star almost overnight? introducing, meghan trainor. tracy smith does the honors. she had the talent to be a big pop star. she just never thought it would happen. did you get told no a lot? >> yeah. even by myself. >> why? >> because i just -- i didn't think looked like it. >> she was wrong. later on "sunday morning" all about that superstar, meghan trainor. >> cowan: holly hunter is on oscar winning actress with a long list of distinctive performances to her name. she'll sit down with jane pauley. >> holly hunter doesn't play a role, she reveals it. >> that's very powerful for meo just own it. >> ah

i'm don dahler. after his big win in tuesday's primaries. gop front-runner donald trump apparently thinks talk is cheap. next week's planned republican debate has been canceled after trump announced he wouldn't attend. that got john kasich to bow out and left fox news with the prospect of ted cruz arguing with himself. so they called the whole thing off. the next voting comes tuesday with primaries in arizona and utah. and democratic caucus in idaho. for the gop, down to three candidates. marco rubio called it quits after he lost his home state of florida. half of the remaining delegates to clinch the nomination. if not, trump and republican foes establishment and otherwise will have to fight it out at a contested convention. >> we are going to go forward. we are going to win. more importantly we are going to win for the country. >> donald trump celebrated big swing state victories tuesday night and paused to ponder the question that vexed his opponent. why attacks against him don't appear to stick. >> my numbers went up. i don't understand

from the broadcast center in new york city, i'm don dahler. >>> what a super tuesday! >> the front-runners look like a cinch to clinch. >> if winner took all this thing >> some republicans fear it is over. >> here is what i will say in november when we lose. i told you so. >> also tonight -- down a the supreme court takes up the biggest abortion case in decades. >>> a gang invades a gun store. and steals dozens of weapons. >>> an energy tycoon dies at the wheel one day after his indictment. >>> and, the most super of the super tuesday returns. >> scott kelly back on mother earth. >> announcer: this is the "cbs overnight news". their tail lights are getting smaller as front-runners donald trump and hillary clinton race nomination in summer and a face-off in the fall. trump has won 10 states, seven on super tuesday. he now has more than a quarter of the delegates he needs. republican candidate ben carson said yesterday he sees no path forward for his campaign and there is only an obstacle course left for ted cruz, marco rubio and john kasich. a nearly insurmountable cour

here's don dahler. >> reporter: the arctic ocean is six million square miles, most of it covered in icet last month, the top of the world was up to 14 degrees above normal and broke the record for the lowest amount of ice in february, more than 400,000 square miles short. >> it's completely unprecedented. people who work up there, you know, go up to the arctic, go out on boats and cruise around to measure these things are absolutely stunned. >> reporter: robert newton is an arctic researcher at columbia university. >> it's the dead of winter there. there's no light. it's well below freezing. it should be locked in with ice all the way across, but the ice is significantly retreated, even in wintertime. >> reporter: the shrinking sea ice could have a potentially disastrous effect on animals, such as polar bears and seals, who depend on the ice to hunt and breed. ice-free oceans absorb more heat and become warmer, which speeds up glacial melting, raises sea levels even more. >> ice is a great reflector of light, which is where most of the heat on the planet comes from. open water is dark.

i'm don dahler. super tuesday delivered major victories for gop front-runner, donald trump. the question now, can any one or anything stop him from winning the nomination? jan crawford has more on the billionaire's remarkable political rise. >> if you told anyone a year ago that donald trump on super tuesday was going to be the republican front-runner, i mean people would have laughed at you. i mean his brazen campaign, it but for trump it is working. >> reporter: when donald trump descended on a presidential race last june. >> i will build a great, great wall. >> reporter: the billionaire's bid for the white house quickly became a late night punchline. >> donald trump announced today he is running for president of the united states. which by the way traditionally means six more weeks of comedy. >> only losers walk. presidents take stair force one. within weeks, trump soared to the top of the republican polls. and no candidate or controversy has been able to topple him. >> they're bringing drugs. they're bringing crime. >> reporter: he has taken aim at mexican immigrants. >>

i'm don dahler. captioning funded by cbs >>> it's wednesday, march 2nd, 2016. this is the "cbs morning news." >>> pulling away. donald trump and hillary clinton score big victories on super tuesday, and now both candidates are sizing each other up as possible foes in the general election. >> hillary clinton doesn't have a clue. >> that work, that work is not to make america great again. america never stopped being great. at least four people in alabama are hurt when a tornado batters the birmingham area. survivors say they never saw it coming. >>> welcome back to earth! with a smile and a thumb's up, astronaut scott kelly returned from orbit. what comes next for the man who spent nearly a year in space. >>> good morning from the studio 57 newsroom at cbs news headquarters here in new york. good to be with you. i'm anne-marie green. >>> donald trump and hillary clinton rolled up decisive super tuesday victories. both trump and clinton solidified control of their races, if not control of their parties, and began to focus on each other. trump, battling opponents,

from the broadcast center in new york city, i'm don dahler. captioning funded by cbs captioning funded by cbs >>> it's thursday, march 3rd, 2016. this is the "cbs morning news." >>> the campaign to stop donald trump. leading republicans try to derail the gop front-runner's path to the party's nomination. >>> scott kelly, space odyssey, and the astronaut is back home in the united states this morning after spending a year in space. >>> and a chilling crime is caught on camera. thieves are seen breaking into a gun store and taking off with dozens of weapons. >>> good morning from the studio 57 newsroom at cbs news headquarters here in new york. good to be with you. i'm anne-marie green. >>> ben carson won't be participating in tonight's republican presidential debate. carson has not officially quit the race, but he says he can't see a political path forward. meanwhile, some republicans are working on a last-ditch effort to deny donald trump the nomination. there are new attack ads and, today, a former gop nominee is expected to weigh in against

here's don dahler. >> reporter: the arctic ocean is six million square miles, most of it covered in ice. but last month, the top of the world was up to 14 degrees above normal and broke the record for ed unprecedented. people who work up there, you know, go up to the arctic, go out on boats and cruise around >> julie: the launch was a success. the falcon9 rocket reached orbit. but no word if it landed the first stage of the falcon9 rocket on a barge. we'll keep you posted. >> lisa: astronaut scott kelly says he's still getting used to life on earth after nearly a year in space. >> ginger: he says the trip changed his perspective a bit. >> i think the only big surprise is how long a year is. it seemed like i lived there forever. seemed longer than i thought it would be. i tried to have milestones that were close, like when is the next crew arriving, when is the next vehicle arriving, the next dva, the next robotics, next science activity, and that made a difference to me, keeping my sanity. reporters in houston friday that he could have gone longer, but the flight has taken a toll on his

from the broadcast center in new >>> welcome to the overnight news, i'm don dahler. the republican presidential field continues to narrow. ben carson who hardly made a blip in the super tuesday primaries and caucuses is effectively ending his campaign. carson says he sees no path forward and will skip tonight's gop debates in detroit. the debate will be hosted by fox news, and this time, front-runner donald trump says he'll be there. trump skipped the fox debate in iowa over his dustup with moderator megyn kelly. but since then, he has been on a roll. major garrett reports. >> if this was a typical campaign, donald trump and his party would move together towards nominating convention. trump and rivals remain at odds, and some in the gop want to block trump's path. a split without precedent in modern politics with a resolution no one can predict. >> it looks like we could win, six, seven, or eight, or nine. >> reporter: trump used the resort as a backdrop. >> it's only too bad winner didn't take all. if winner took all this thing is over. trump did not repeat claims t

don dahler is looking at the the project and the concerns it is raising. >> reporter: good morning. this is a link nyc kiosk. three dozen up and running with the goal 7,500 stationed around the city. and we can have internet access and high speed wi-fi for your own device and charging and has a 911 emergency button here if you get into trouble. the question is -- if more people use public wi-fi, does that put more people at risk to hackers? these aren't your daddy's phone booths. in fact, they are replacing them. colin o'donald help design the system. >> you can browse the web. >> reporter: you said it makes regular phone calls? how does that work? >> make free phone calls and take as long as you want in the united states. >> reporter: technicians remotely monitor the usage and designed for the rigors of city life, the kiosks have been tested to withstand everything from bad weather to a parking accident to dog pee. francisco have failed at public wi-fi because of a lack of funding. don says new york city will succeed because it will benefit financially from ads on the kiosk's sides

don dahler has the story. >> reporter: the arctic ocean is 6 million square miles. most of it covered in ice. top of the world was up to 14 degrees above normal and broke the record for the lowest amount of ice in february. more than miles short. >> it's completely unprecedented. people who work up there, you know, go up to the arctic and goe around to measure these things are absolutely stunned. >> reporter: robert newton is an arctic researcher at columbia t's the dead of with winter there. it's well below freezing. it should be locked in with ice all the way across. but the ice is retreated even in wintertime. >> reporter: the shrinking sea ice could have a potentially disastrous effect on animals such as polar bears and seals to hunt and breathe. ice-free ocean absorb more heat and become up glacial melting and raising sea levels even more. >> ice is a great reflector of light which is where most of the heat on the planet comes from.s dark, it's a fantastic absorber. >> reporter: newton says changes in the arctic can also affect weather here, causing storms andt