>> glor: tonight arctic air blast part two. a new wave of bone chilling temperatures moves in tonight and will affect more than half the country in the week ahead. we'll have details. the nuclear deal with iran starts tomorrow. but will congress upend the agreement? david martin reports. americans saying no thanks to the olympics. don dahler and why so many are staying awayrorussia's winter games. >> perfect. >> and homework at school, lessons at home? dean reynolds shows us the flipped classroom. >> it makes that class time so much richer than it was in the past. captioning sponsored by cbs this is the "cbs evening news." >> jeff: good evening, everyone, i'm jeff glor with a western edition of the broadcast.

for the second time in three weeks a frigid coating of cold air is about to pay an unwelcome visit. tens of millions of americans will feel it. this one will not be as bad as the polar vortex, but with temperatures expected to hit 20 below in fargo, 14 in nashville and 19 in atlanta, it is still going to be 15 or 20 degrees below average for many. we start with lauren casey from wcco. lauren, what is going on here? >> reporter: jeff, here in minneapolis our temperatures are in the upper 30s, balmy by our standards but the bottom falls out tomorrow with another arctic air mass blasting in, highs across the upper midwest by tuesday will be in the single digits and below zero and into midweek this bitter air mass will march eastward. >> glor: we all became uncomfortably familiar with this term polar for text last time. is this a polar vortex? >> in this case it is not that exactly. the polar vortex will send out

some pieces of energy to do its bidding for it and have us bundling up. >> glor: lauren casey, thank you very much. meanwhile in california the problem is drought. on friday governor jerry brown declared a statewide emergency to speed up help for local governments. 89% of the state is experiencing severe to extreme drought conditions. lake folsom which provides water to sacramento is only 18% full. residents have been asked to cut water use by 20 to 30%. but it's small towns which rely on winter rain to replenish wells that are taking the biggest hits. in willits, population 5,000, town officials have limited water use to 150 gallons a day for a family of four. outdoor watering and car washing has been banned. a team of inspectors is in tehran poised to begin scrutiny of iran's nuclear program tomorrow. iranian compliance means the easing of international trade sanctions with billions of dollars on the line. but skepticism on capitol hill

could scuttle this deal. here's david martin. >> reporter: starting tomorrow and continuing every day for the next six months, iran's two uranium enrichment plants will be subject to daily inspection by the experts from the international atomic energy agency. among other things, they will verify that iran has halted enrichment of uranium to 20% purity. one step away from boom-grade material. and that iran has begun to dilute its existing stockpiles. in return the u.s. and european partners will suspend about $7 billion of the $100 billion worth of economic sanctions which are credited with forcing iran into serious negotiations about its nuclear program. for the u.s. the aim of the six- point agreement is to stop the clock on iran's nuclear programs to allow time for negotiators to reach a longer lasting agreement that would allow iran to develop nuclear power for civilian

purposes, but not for building a bomb. critics most notably israel's prime minister have called it a bad deal. >> some in congress have proposed legislation that would hit iran with even harsher sanctions if it walks away from a deal. registration which iran and president obama have warned would kill negotiations right from the start. >> now is not the time to move forward on new sanctions. >> reporter: both the inspectors inside iran's enrichment plants and the negotiators haggling over a long-term treaty will be laboring against decades of distrust and animosity. david martin, cbs news, washington. >> glor: ten days after a chemical leak first polluted their water thousands of people in and near charleston, west virginia, remain skeptical of official assurances that their drinking water is safe. jeff pegues is in elkview, west virginia tonight. >> reporter: when mathilde murray turns on the water in her

home, this is how it looks. she lives here with her husband and five children. everyone from the water company, to state health officials are telling her and hundreds of thousands of others here that the water is safe. >> looks pretty nasty. i won't let my kid drink it. >> reporter: in the charleston area, the water supply was contaminated on january 9. since then water company tests have determined that there are acceptable levels of the chemical in the water. but no one really knows yet how harmful the substance used to clean coal is to humans. and that raised questions about how the state of west virginia regulates heavy industry. senator joe manchin is cosponsoring legislation to help strengthen oversight. >> are industry's needs addressed more in west virginia state legislature than the needs of individuals in the state without right now don't trust the water they're drinking. >> there is always more we can do. you know, all of us. you can do more.

and it's a shame that sometimes it takes a disaster such as this, at this level. >> reporter: but west virginians we spoke to say too little too late. did you drink the water today? >> i did. >> reporter: how was it? >> i'm still here. >> reporter: mathilde murray doesn't trust it. >> no way. you guys can drink it. i'm absolutely not going to let my kids drink it or me. i won't even let my cat have the water. >> reporter: a couple dozen lawsuits have been filed against freedom industries, the companies responsible for the leak. and they have declared bankruptcy, but jeff, mathilde murray isn't concerned about who is going to pay, she's concerned about the water. >> glor: jeff pegues, thank you very much. you can see more of jeff pegues interview with west virginia senator joe manchin first thing tomorrow on "cbs this morning." new jersey governor christie spent his second day in florida today for a continuing series of g.o.p. fund-raisers, seemingly far from the controversies about bridge lane closures and sandy relief funds that grab headlines back home.

however the questions have continued. we are joined in washington tonight by alexander burns senior political reporter for "politico". alex, thanks for being with us. what is the outlook for the governor this evening? >> well, jeff, the big picture here is that chris chrisie is trying to show that he can turn the page on controversies back home, get back to his job as governor. and be out there around the country raising money for his fellow republicans as chairman of the republican governor's association. that is proving to be easier said than done. down in florida he held a number of events for the governor rick scott who has a tough re- election campaign. he was followed around the state by the chair of the democratic national committee. and you have, you know, any number of controversies unfolding on the local level in florida where republicans have had to answer for their perceived connection to a governor who's fighting an investigation back home. >> glor: meanwhile alex, these explosive charges from the mayor of hoboken dawn zimmer who claimed that sandy aid would be tied to her potential support for a real estate deal, what do you make of those charges? >> look, i think the big picture

on these new allegations is that it really is open season on chris christie. that you know the big question as the mayor of hoboken has to answer is if you were the subject of some political shakedown why did you wait so long to speak up? but as far as the new jersey legislature and other investigators are concerned, that is almost a side point. they can go ahead and issue subpoenas to go into any part of the christie administration they want. and that's why it will be so difficult for him to move on and refocus on what he really wants to be doing which is running up the scoreboard in his second term ahead of a presidential campaign. >> glor: alexander burn from "politico", alex, thank you. >> thank you. >> glor: security trends continue as the sochi olympics approach, the winter games opening in 19 days now. house intelligence chair mike rogers addressed the issue on "face the nation" this morning. >> i have real concerns about the safety. the russians have not been fully cooperative on a security front with sharing information that might helpful in securing of

both of our athletes and the participants, people who are there to view the games. >> glor: and in russia today a video surface raising even more security concerns. in it, two men threatened to kill those who attend the winter games in retaliation, they claim, for muslims killed around the world. the video was shot months ago but just released now. >> those security concerns are putting a dent in olympic ticket sales. as don dahler learned, there are multiple reasons why many americans are staying away from the games. >> reporter: to the relief of the olympic host nation, snow finally arrived in sochi for the first time this winter. but come the opening ceremonies, will the spectators, travel agents are seeing a steep decline in bookings over past olympics. one agent told cbs news she has fewer than 50 clients going to sochi in comparison she booked 250 for the vancouver olympics and 350 for beijing. another sign of disinterest, tickets to events are still available.

normally they sell out months ahead of time. safety is the main concern. in light of recent terrorist bombings 600 miles away in volgograd and threats by a terrorist leader to attack the games, 40,000 police and soldiers have been dispatched to the region. maine senator angus king says the danger is real. >> i would not go. and i don't think i would send my family. i don't know how you put a percentage on it. but it is just such a rich target in an area of the world that has, you know, they've almost broadcast that they are going to try to do something there. >> reporter: sochi is also very difficult to get to. it is located on the black sea at the foothills of the caucasus mountains. travel requires multiple connections. the trip can take more than 30 hours and cost thousands of dollars. then there's the question of hotel rooms. booking one is almost impossible. because many are still being built. russians new anti-gay laws are also causing concerns. russian president putin promised

no one will be discriminated against but the u.s. state department warned americans not to make any public statements there in support of homosexuality. professor lee igel is codirector of new york university's sports and society program. >> sochi is going to raise questions for the international olympic committee going forward, in terms of its bid process, and to which cities or countries it selects to host the games, in part because of all of the concerns that we've discussed. but also the bid process in terms of how much it is costing from bid to actually putting the games on. >> reporter: with a $50 billion price tag, the sochi games will be the most expensive in history. don dahler, cbs news, new york. >> glor: in afghanistan three americans killed this weekend at a kabul restaurant have now been identified. two of them worked at the american university. charlie d'agata has more.

>> reporter: friends and family of lexi kammerman have described the 27-year-old chicago native as smart, strong, stubborn and fearless. she took the job at the american university of afghanistan less than a year ago. her family said in a statement, "to help the young women of afghanistan get an education and take their rightful place as leaders in afghan society." >> her american colleague alexandros petersen only recently joined the university as a professor. today university president michael smith spoke of their courage and sacrifice. >> we have a saying here in afghanistan among internationals that if are you here, you're here by choice. and that's especially true for these two people. they wanted to be here in afghanistan, not somewhere else. and they wanted to make a difference in young people's lives. >> reporter: american basra hasan was also trying to make a

difference in her work for unicef. afghans held a rally today denouncing terrorism. laying flowers outside the restaurant where the bombing and shooting rampage killed 21 people. the taliban said the attack was in revenge for an air strike. these are u.s. military hand-out pictures of the operation in question. the military has launched an investigation and today released early details. >> regretting that several civilians had been accidentally killed in an air strike that afghan and u.s. forces came under heavy gunfire from taliban fighters firing from civilian compounds. just two days later came the attack on the restaurant. but whether the taliban was able to coordinate such an attack that quickly or just used the air strike as an excuse, doesn't matter for the families of the victims. charlie d'agata, cbs news, london. >> glor: later, controversy in japan over the fate of more than

200 dolphins. and with two seconds to go, the wild shot that won this high school game from an extraordinary athlete. when the "cbs evening news" continues. ♪ whoa, who-o-o-a ♪ one, two, three, four! ♪ ohh, oh-oh-oh-oh ♪ ohh, oh-oh-oh-ohhh ♪ go, let's go ♪ hit me like a supernova ♪ let it flow ♪ over like an ocean ♪ when the sound explodes ♪ everybody's feeling all right ♪ ♪ everybody's feeling all right ♪ ♪ ohh, oh-oh-oh-oh ♪ everybody's feeling all right ♪ if yand you're talking toevere rheuyour rheumatologistike me, about trying or adding a biologic. this is humira, adalimumab. this is humira working to help relieve my pain. this is humira helping me through the twists and turns. this is humira helping to protect my joints

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enslavement, really, just for the amusement of people. >> reporter: watson say as quarteriums will pay about $150,000 for a dolphin and out of the 250 captures, only about a dozen will be selected and sold to aquariums. the rest will be killed and their meat sold. the selection process reportedly begins today. >> the most valuable in this roundup, a rare all bino calf watson ways is worth a half million dollars. the u.s. ambassador to japan caroline kennedy tweeted her condemnation saying she was deeply concern by inhumaneness of drive hunt dolphin killing. the jaes defunded it as a local custom. it was the subject of a 2009 documentary the cove which within an oscar. >> watson without opponents describe as an ecoterrorist has been confrontational on other encounters to prevent mass slaughter of sea life in the past. but this time says an appeal to the public is the only way to stop the killing. >> our strategy with this is to really utilize the most powerful weapon that's ever

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one minute there was nothing in front of the mars rov erck r then suddenly a rock appeared. as ifa scientists say it is like nothing they have ever seen. the rover is now investigating trying to learn where the rock came from and what it's made of. >> a braz enheist of rolex watches in memphis last night. police are searching for half a dozen men armed with sledgehammers who slipped into a jewelry store at dinner time, smashed display cases and fled with 65 watches. total value more than $700,000. >> and check this one out, what a highlight. kernersville, north carolina bishop mcginnis high was trailing by one point in overtime, two seconds left, here is what happened, spencer william gets the ball, a shot, 50 feet, in. the school tells us spencer, a sunnier is a two time cancer survivor. >> still ahead, a crash course on the flipped classroom. uminous, shiny color? innovative cc cream from nice 'n easy.

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to help. dean reynolds takes us inside the flipped classroom. >> the wave has to travel a lot faster. >> at warren township highs school in gurnee, illinois, science teacher helps kids do homework in class. and sends his lectures home. >> black and others who have embraced the flipped classroom condense their lectures into a brief homemade and often lighthearted video. >> this is the light is actually the smallest tinniest tuniest part of the electromagnetic spectrum. >> students can digest the information outside of class whenever they like. the next day they get their questioned answered and apply the lessons with the teacher in the room. >> i can talk faster in the video. because i don't have to slow down for the kids to make sure they're catching it. and because they can pause. >> they can pause it, they can rewind it. so i can talk faster and they can pick up that information quicker. >> freshman hailey dorsey echoed that point. >> you are able to like

pause, and go back and re-- go over stuff that you don't really understand. >> the videos are nice. i actually like them. they're much easier than what we used to do last year jns jared cosey is another freshman. >> it's really nice to go home, go look on the youtube channel and watch the videos. >> because are you moving slower. >> thank you. >> it is moving less. >> the question you like to ask is what the best use of your face-to-face class time. >> educator john berg-- jon bergman and partner aaron sams came up with the flipped classroom concept originally designed for football players who missed class while on the road. >> we are sending kids home to do the hard stuff. we send them home to apply, analyze an sithe size con at any time and they can't do it. >> and then when they come to class now in a flipped classroom the difficult tasks, application, analysis and synthesis happens with the experts, the most important person, the teacher present. >> 3% of teachers are flipping classrooms now. 18% have expressed interest,

and 28% of school administrations want to do it. >> i can challenge the people who are doing really, really well and help the kids who really are struggling. >> was the amplitude lower or greater. >> no matter what, i would say every day now i talk to every kid. >> one person. >> the flipped classroom is right side up. >> i when i see a kid struggling and then understand it, that is what does it for me. >> and for a whole group of young minds. >> video for monday. >> dean reynolds, cbs news, gurnee, illinois. >> jeff: that is the "cbs evening news" tonight, later on cbs, "60 minutes." i'm jeff glor, cbs news in new york. good night captioning sponsored by cbs captioned by media access group at wgbh access.wgbh.org

about a nailbiter of a game. restaurants and bars in the south bay expecting a big b in business -- and not justm tonight's game. president obama on smoking marijuana -- and how it coms to alcohol. what he says may surprise you. kpix 5 news is next. we are just minutes away fr finding out if the niners w,

how fans are reacting to th heart-stopping game. good evening... i'm ann notarangelo. we are minutes away to find out if the 9ers are heading to the super bowl. how the fans are