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>> this is the moment the coring machine struck the bottom of the sea floor. a half mile beneath the ice, they made history. it was the first time any one has ever collected sediment from beneath the ice shelf in greenland. >> the ocean beneath is probably the least accessible part of the world ocean. and just getting access to that is a triumph frankly as far as we are concerned. the ice shelf extends from the glacier and flets oats on the ocean.

holding back ice from sliding into the sea. if it goes away, sea levels go up. is there a sense of urgency in the work that you are doing? >> the sea level rises, the big question we are trying to get at. and peterman glacier, this experiment here, gives us an opportunity to get at the processes, and try to understand the basic physics to how that can happen. >> our visit to the ice camp was cut short. our pilots warned of something, ice fog moving in. days. helicopter. heading to another outpost of the expedition. camp. set up on the j of edge of peterman glacier. steve marquatt and geologists have been here for weeks gathering samples from rocks. >> this was probably deposited when the ice was maybe a few hundred to few thousand feet thicker.

talking about, 600 feet of ice above us. >> above where we are now. >> above where we are now. peterman would have been much larger, dropping the rocks all over the surface. >> to the person at home who is looking at you guys chipping at rocks why should i care about this? >> we know if you warm the planet up. glaciers respond. they melt. the question is at what rate? pen? where is if the going to happen? where are the vulnerable spots in the ice sheet. to understand all that you have to understand how the ice sheet, what controls an ice sheet. we need to understand this glacier to provide a better prediction for the ice sheet. that matters to us because of sea level. if the glaciers can respond die namingly, we should all be concerned. because the that can create dynamic changes in sea level and flood infrastructure. we need new know that planning for the future. >> reporter: we camped out next to the scientists. with 24 hours of light. we slept in the tents under the

in the morning, we were shuttled out to meet the swedish ice breaker making its way around peterman glacier. it supports the scientists on land and acts as a fleeting ing floating laboratory. named after a norse good who sought wisdom. it is home to 50 climate scientists from around the world with similar convictions. their work is funded mostly by the swedish government. and the u.s. national science foundation. larry mayor, is one of geologists on the ship. and using sonar to map the ocean floor. creating the first detailed maps that show how peterman glacier slid into the sea. see it like skid marks of a car at an accident scene. >> yeah, the ice went here. the ice went there. we can seep it. oh, stopped here. >> reporter: hauch of ow much of the

with detail. >> 6%, 7%. >> reporter: you can make the trip to peterman glacier a few weeks each summer when the ice melts enough to allow passage. >> see the blocks of ice drifting by. >> reporter: allen mix is running the ship's coretion operation. trying to grab sediment from the sea floor. >> actually the coring site is under the block of ice. we just can't get there. we are trying to drift with the ice and sort of snook up on it. gently. >> reporter: it is hard to sneak up on anything in an ice breaker. he doesn't so much as sail, as it does smash the ice like a 13,000 ton hammer. once in position they throw a piston core, like a dart, at the bottom of the ocean. >> that doesn't sound good. >> after multiple attempts. >> go to the next up.

>> a car sample look this is collected. inside the ship's lab, the multiyear process of investigating those cores, begins. what is your best guess. how old is this? >> so the base of this core -- probably is no more than 10,000 years. >> reporter: ann jennings with institute of arctic and alpine research. she says each core holds clues about peterman glacier's past. >> we didn't really expect to find things living under the ice shelf. we have. >> what have you found? >> this one we found, sivisivides-storfi. >> easy for you to say. >> it is a seashell. single celled animal. >> reporter: the single celled animal like all living creatures made out of car been alug scientists to -- carbon, alug scientists to determine when they lived. take the depth scale here.

then we can say when did the ice retreat? how quickly did it retreat? was there a lot of multiwalter coming out? >> you can get all of that from what looks like mud? >> yes. >> reporter: after a week in greenland, we headed home. but the scientists kept working. taking advantage of the final days of the short arctic summer. the 66 core samples they collected during their month at sea will be studied by scientists around the world for decades. >> this is the largest core repository in the world. >> a paleo climatologist at columbia university. he says cores collected in greenland are like a black box of the earth's inner workings. this one he collected south of greenland. >> this is today's climate. we have had 10,000 years of roll tiffly warm climate. then we go, 10,000 years in the past. boom. there is the last ice age. this is when long island was formed. cape cod was formed. go on.

this is filled with these rocks. ice rafted treditis. this period. whoa, a warm phase. cold phase. then another warm phase. short cold phase. longer warm phase. boom, another ice age. so you have had, cold, warm, cold, warm, cold -- warm. today. you can see the full report on our website. cbsnews.com. the overnight news will be right back. no wait time. this is great. it's very soft. can i keep it? (laughs) all the care of dove... ...now in a dry antiperspirant spray. hi, anne. how are you doing? hi, evelyn. i know it's been a difficult time since your mom passed away. yeah. i miss her a lot, but i'm okay. wow. that was fast. this is the check i've been waiting for. mom had a guaranteed acceptance through the colonial penn program, and this will really help

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the wounded warrior project again finds itself in the cross hairs of those who say it is wasting money that could be spent on america's wounded veterans. a cbs news investigation found the organization spent millions of dollars on lavish parties and expensive conventions. now the watch dog group, charity navigator put the wounded warrior project on its watch list saying it spend 60% of the money it raises providing veteran services. chip reid has been covering the story from the start. >> reporter: the nation's most prominent veterans charity is facing criticism from more than 40 former employees about how it spend the more than $800 million it raised in the past six years. we asked mark owens, former director of tax-exempt organizations at the irs to review the wounded warrior projects, tax documents.

reading the forms? >> that i couldn't tell the number of people that were assisted. unusual. if the organization is asking for money and spending money, purportedly spending money to assist veterans, i would look to know. >> reporter: wounded warrior project says 80% of their money is spent on programs for veterans because they include promotional items. direct response advertising and shipping and postage costs. ic they take that out, and it looks like charity watch dogs, say 60% of donations go to help wounded service members. >> the ceo said fund-raising should and can be included in the programs and services. your response? >> well, i would be curious to know how asking people for money equates to the assistance

>> steven nardizzi, ceo since 2009. in 2014 paid $500,000 in line with similar sized charities. many former employees said they thought it was too much. nardizzi defended his salary to our norfolk affiliate last april. >> my sally is less than 1/10 of 1% of donation that come in. i am running an organization that is helping hundreds of thousand of warriors. >> reporter: last year, wwp gave $150,000 grant to a group that defends higher spending on overhead, executive salaries and fund-raising by schar tees. nardizzi says the more money the charity raises the more it can spend on veterans. >> if your fixation is spending the most on programs. that's feeling the good. not necessarily doing good. you can run program activities. spent a lot of money. >> charity watch dog says his biggest concern is that the group is sitting on a $24

and not enough of it is being spent on veterans. >> it would be helpful if the hundreds of millions of dole lars are being spent to help veterans in the shorter term.

millions of people in the midwest are still digging out after the week's massive snowstorm. heavy snow and powerful wind knocked out power. for schools and businesses forced to close and triggered flight cancellations from colorado to northern michigan. the harsh winter weather isn't trouble for everyone. one businessman is transforming snow and ice into a castle of his own design. jamie yukas has the story. >> reporter: piece by piece. day and night. this colorful mountain is molded into a masterpiece.

them. >> i've got to be one of the luckiest guys. >> it began as a hobby for brent christianson. the kids and i would build igloos, ice rinks, and using icicles and spraying water as a way to build. >> from his backyard to now a $2 million business. this year, four crews are creating ice parks in canada, utah, minnesota and new hampshire. warm weather forced a late start in new hampshire. his team of 20 artisans worked 14 hour days for three weeks. spraying 5 million gallons of water in temperatures as low as 2 degrees. offers chills and thrills for all ages. >> we've got slides. mazes made out of ice. and canyons, and tubes. >> this park is open day and night. with the help of thousand of

>> they go, right. blue, green. we have them synchronized to music. >> reporter: work continues on the sculptures throughout the season. some will grow to as high as 40 feet. >> to share with other people. also make a lifrg from it. i can't think of any bed to trade place with. >> the king of ice castles even if his reign lasts as long as nature allows. >> that's the ever overnight news for thursday. for some the news continues. check back with us for the morning news and cbs this

a health emergency has been declared in florida with nine cases of zika virus and all conditions ripe for more. devastating tornados in the deep south. >> just unreal to walk out and see this, this could happen in a matter of seconds. >> as the candidates campaign in new hampshire, trump calls for a do-over in iowa. and the incredible super bowl record set by a photographer. >> i had two of my heroes together in the same shot. >> announcer: this is the "cbs

a tornado touched down near fort stewart in georgia. it was on the ground about ten minutes. there are reports of damage. and power outages. the twister you see there would be the 11th tornado so far from the major storm system that has crossed towards the east. for more on the damage from tuesday night, we will go to david begnaud in collinsville, mississippi. >> reporter: scott, good evening. collinsville knows what the people of georgia are dealing with. 24 hours ago at this very moment a tornado came from this direction and ripped through the first baptist church where we are tonight. the only people here, pastor, they hid in the safest place the church. this was the scene throughout alabama and mississippi over the last 24 hours.

>> reporter: in collinsville, mississippi, vicky hartley took shelter with a neighbor in a basement before her roof was blown off. >> is was shocking. i was thankful that we were all okay. >> reporter: the tornado continued 3/4 mile, approaching the first baptist church of collinsville. pastor wade ricks heard it coming. >> took off running. and my son was right over here. i said get inside. we went inside and got underneath a desk. and soon as we got under the desk it hit. >> reporter: pastor rick says it took less than 20 second to dupe this to the 85-year-old church which had been damaged during hurricane katrina. >> hard to believe that something could do this much damage so quick. >> reporter: north of mississippi, in tennessee, the same system that fueled those tornado thousands, caused flooding. eight people in rankin county were rescued from their homes. another this morning in ashland city.

>> sun day i preached on how to handle storms. if that's believable. i guess god is saying, "you know, you are going to practice what you preach." >> reporter: there have been no major injuries or deaths reported from any of the tornados. and scott, the pastor here at first baptist church in collinsville says if the tornado would have hit 24 hours later, there would have been a group of children in this classroom for bible study. david begnaud, thank you. tonight, for the first time a health emergency declared in this country because of the zika virus. which is suspected of causing birth defects. the governor of florida put the emergency into effect in four counties including miami-dade. it will allow more spraying for mosquitoes that can spread the disease. zika can also be transmitted sexually. florida has at least nine cases. all of the patients were infected overseas. but now there is concern that those patients could infect florida mosquitoes.

12 states and washington, d.c. all infected overseas except for one sexually transmitted case in dallas. all week this week, dr. jon lapook has been covering zika at the place that the outbreak is at its worst in brazil. jon, you have been working on why florida is taking this action. what have you learned? >> reporter: scott, i think an attempt to stay ahead of problem lowering the odds that zika virus will enter the local mosquito population in florida. no evidence that mosquitoes have the zika virus. a person gets infected with zika in brazil. flies to the united states, in florida. stays in the blood stream a week. a local mosquito in florida. bites that infected person. picks up the virus.

bites an uninfected person. you have local spread of zika. something they don't want. >> john, nobody has more experience dealing with this than the brazilians. what are they doing there that we may see here later? >> scott, an all-out effort here. first, public spraying. trying to reduce mosquito breeding ground. they are going house to house. went with soldiers. public health officials. educating about prevention. small containers that contain walter scan be a breeding ground for the species of mosquito. lot of authorities about this. what's the likelihood there will the united states? >> scott, i think it is very, very likely that's eventually zika will make its way into local mosquitoes in the southern part of the united states first. i have spoken to think it is outbreak on the came of something say in brazil. >> dr. jon lapook on the front line of the zika outbreak in brazil tonight. six days to new hampshire.

over iowa caucus winner ted cruz and marco rubio. jeb bush, john kasich, chris christie in single digits. despite the lead, julianna coleman says trump is sore about iowa. >> we did really well. >> reporter: donald trump sounded like he had come to terms with his iowa loss last night. but woke up this morning on the twitter war path. accusing senator ted cruz of stealing the election and calling for a caucus redo. the texas senator fired back. >> it is no surprise that donald is throwing yet another temper tantrum, if you like, a trumper tantrum. >> reporter: as cruz and trump battle for the insurgent mantle. jeb bush focused fire on marco rubio. >> marco rubio came in third place in a caucus state. we are all supposed to bow out. that is absolutely absurd. >> the florida senator has recently cutback on attacking

leaving it to television ads. >> two names from the past. tied to the past. >> congress makes a choice -- >> some of rubio's toughest attacks from chris christie. who dismissed bush and ohio governor john kasich. >> this new hampshire primary now done to a choice between me and marco rubio. everybody knows it. >> what did you mean by that? >> you can tell the way the senator is engaging and i'm engaging with him. it is down to two of us on the side of the street. >> everyone has an opinion in this business. if i get absolutely smoked up here the i will go home. i don't think that is going to happen. >> reporter: recent polls, showkasich ahead of christie. polls are unreliable until votes are cast. >> julianna coleman for us. the cbs "overnight news" will be

>> i'm alex trebek. if you're age 50 to 85, i have an important message about security. write down the number on your screen, so you can call when i finish. the lock i want to talk to you about isn't the one on your door. this is a lock for your life insurance, a rate lock, that guarantees your rate can never go up at any time, for any reason. but be careful. many policies you see do not have one, but you can get a lifetime rate lock through the colonial penn program. call this number to learn more. this plan was designed with a rate lock for people on a fixed income who want affordable life insurance

coverage options for just $9.95 a month, less than 35 cents a day. act now and your rate will be locked in for life. it will never increase, guaranteed. this is lifelong coverage that can never be cancelled as long as you pay your premiums, guaranteed. and because full benefits are not paid in the first two years your acceptance is guaranteed, you cannot be turned down because of your health. call for your information kit and read about this rate lock for yourself. you'll also get a free gift with great information both are free, with no obligation, so don't miss out. call for information, read about the 30 day, 100 percent money back guarantee. don't wait,

senator rand paul dropped out of the republican race today. he is going to focus now on getting re-elected to his senate seat in kentucky. now to the democrats, after losing to hillary clinton in iowa, by the narrowest of margins, bernie sanders is beating her nearbily 2:1 in the latest poll in new hampshire. here is nancy cordes. >> their argument is, look, you

>> reporter: with her poll numbers sinking here, hillary clinton all but concede to bernie sanders today. putting it off on geography. >> new hampshire always favors neighbors which i think is neighborly. >> reporter: sanders represents vermont next door. how much of your lead do you think should be attributed to the fact that you are from a neighboring state? >> if you did a poll about how many people in new hampshire new hillary clinton, how many people knew bernie sanders, i suspect more would have known hillary clinton. >> reporter: he says he is leading because he is in line with the state's progressive base. 56% of democrats who voted in new hampshire's 2008 primary called themselves liberals. 36% were moderates. sanders was asked tuesday if he thinks clinton is progressive? >> some days, yes. and then i guess she is not a progressive. >> it was kind of a low blow. >> reporter: clinton took offense.

here's what she said in ohio last year. >> i get accused of being kind of moderate and center. i plead guilty. >> reporter: here's what she said today. >> we have been fighting the progressive fight and getting results for people for years. >> reporter: so, what changed from then till now? well, back in september, clinton wasn't expecting a tough challenge from the left. today, scott she says her fight is on behalf of children's health insurance, women's rights and gay rights, prove she is in progressive's corner. >> thank you, nancy. late today we learned that bill cosby will be going on trial. a pennsylvania judge refused to throw out sexual assault charges against him. jarika duncan at the courthouse

>> bill cosby left the courthouse ten minutes ago. the disgraced comedian's attorneys had been working to get the case thrown out. argued there was a promise by the former district attorney to never charge cosby for allegedly sexually assaulting, andrea constand. from a civil deposition, 2005, unsealed last summer. in it, constand's attorney asked cosby, when you got the quaaludes was it in your mind you were going to use the quaaludes for young women that you wanted to have sex with? cosby replied yes. the case again moves forward in preliminary hearing, scheduled next month. >> jericka duncan with the breaking news tonight. thank you. today congress investigated why veterans are being denied a cure for a deadly form of hepatitis. in a cbs news investigation we told you the cure was developed by a doctor working for the department of veterans affairs. the doctor got rich, but at $1,000 a pill, the v.a. can't

here is chip reid. >> if i were you, i would be outraged. >> certainly the taxpayers should be outraged. at today's hearing was directed at some one who wasn't in the room, dr. raymond schinazi, played a leading role devil tuping a drug that cures hepatitis c. when he told his company to pharmaceutical giant, gilead in 2012. he made $400 million. did it all working 7/8 of his time for the department of veterans affairs. >> these are not full time. what i do with my remaining time is up to me. >> reporter: we first met dr. schinazi in december. >> has any bed questioned the arrangement that you have that allows you to become very wealthy while working 7/8 of your time with the government? >> february has never questioned yet. >> reporter: that changed as members including tim huelskamp grilled david shulkin. >> he just sold a company for $400 million. did anybody know about that? >> i am not aware of who knew what, three, four years ago.

to know why schinazi got rich but the va got nothing. >> is it bureaucratic incompetence, corruption or combination of the two. this wasted resource is why this nation is unable to take care of the men and women who served the country. >> others were upset the doctor was not there to be questioned. the va said that he retired two days ago. >> the person who is responsible always seems to retire just before the investigation starts. >> reporter: the va did approve schinazi's part time arrangement and told us part time employees are allowed to invest in private companies so long as all conflict of interest rules are followed. the va says there will be internal and external investigations. >> chip reid, thank you. well, war and poverty in syria have led to the largest refugee crisis since world war

more than a million refugees welcomed by germany. but charlie d'agata found that the welcome is wearing thin. when they saw the suffering. germans opened their arms like no other country in europe. >> hopefully nothing. >> mayor boris palmer was among them. >> we had people drowning in the mediterranean sea. terrible. >> reporter: but the mayor of the university town of 80,000 has had a change of heart. >> if you have several hundred thousand men who come to your country as singles. and live in sports halls and town halls. what do you expect them to do?

and they have no contact to women. and how long will that happen violence? >> reporter: for many germans the tipping point was new year's even cologne. police and witnesses said gangs of drunken men including many north africans and arabs groped and assaulted hundreds of women in the crowd. police are investigating 380 complaints. including rape. seattle university student, caitlyn duncan lost her boyfriend in the mayhem that night. >> someone reached up my jacket. i was in a crowd. i was kind of twisting, turning, hitting, kicking. so, it happened all very quickly. but, yeah, people grabbed, you know between my legs, my -- my head, my face. >> reporter: she didn't get a good look at her attackers but said they were all shouting in arabic. she was rescued by a group of syrian migrants. >> i was just so relieved.

of hugged me. caitlyn, it is going to be okay. you are safe now. don't cry. >> caller: duncan said she came forward to show that not all migrants should be blamed. 33 arrests have been made so far. 2/3 are asylum seekers. the cologne attacks have hardened german's attitudes. and mayor palmer said germany simply cannot take as many migrant this year. >> the numbers have off to decline. otherwise, there will be breakdowns in german cities and communities. >> reporter: today the german cabinet took dramatic steps towards tightening asylum rules, scott, including a two-year ban on family reunions and barring north african countries altogether. >> the welcome mat wears thin. for desperate people. thank you, charlie d'agata. a smartphone app may have connected a teenager with her killer. urface cells for a dramatic transformation without the need for fillers. your concert tee might show your age...your skin never will. olay regenerist. olay. ageless. and try regenerist micro-sculpting eyeswirl.

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there is a bail hearing tomorrow for one of two virginia tech students charged in the stabbing death of nicole lovell. investigators believe the girl was lured to her death online. here's done dahler. >> reporter: in her 13 years, nicole lovell endured life threatening illnesses.

medicine caused her to gain weight says her stepmother, terri lovell. she would send me messages about the little girls picking on her, saying she was fat. she would cry. she didn't want to go to school. >> reporter: the seventh grader sought a better lie on line. and against her father's wishes she created social media personas. >> she was able, at 13 to go and set up profiles on facebook that we had no idea about. a minor should not be able to do that. >> reporter: in this invisible world online these kids are in. >> we have no idea. >> reporter: one person police believe she was talking to accused killer david eisenhauer, possibly on the app, kik. kik allows users to be anonymous and send photos not saved on the phone leaving no trace. and with the national center of exploited and mising children. >> every phone, every social media site has some parental control.

time limits that are set. and, all of those are great. but technology doesn't solve all of the problems. >> experts say parents need to take an aggressive role in knowing what their kids are doing online and who they're talking to. monitoring all social media activity and getting copies of every e-mail and text. >> the lovells wish they could have done more. >> awful. tragedy. all could have been prevented. >> reporter: scott, kik said they helped the fbi in this case and all child predator cases. >> don dahler. thank you, don.

the irs suffered a major computer failure and it can't accept many taxpayer returns online. the agency says it may not have a fix for this until tomorrow. there is also news tonight about cbs. leslie moonves elected chairman of the board. he will remain president and ceo as well. sumner redstone who recently stepped down as executive chairman, named chairman emeritus. coming up next.

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we end tonight with a man who shares a super bowl record. one of only four men to take a snap at every super bowl game. here's john blackstone. >> reporter: at super bowl 1 in 1967, the very first super bowl touchdown was captured by photographer 15 years old. john biever. >> i had max mcgee's first

wide shot, showing empty stand in the background. >> reporter: the stand were not full at the first super bowl? >> no. >> reporter: since then, biever photographed every super bowl. >> gentlemen namath, super bowl three. and john madden, super bowl 11. biever got to the first super bowl his father was photographer for the green bay packers. that game gave him the favorite photo. >> vince lombardi off the field. my father to the right in the background. had two heroes together in the same shot. >> reporter: by super bowl 4. biever earned press credentials. for 30 years now, he has been with "sports illustrated." >> this player, celebrating with confetti made the picture. >> reporter: his photos reveal changes in both the game and photography. >> this was our first digital

this is the first year we didn't use film. now, it is all auto focus equipment. that little talent of following focus of the action is gone. >> reporter: you liked it in the old days when, some mud went flying. >> one of my favorite shots. >> super bowl 22. doug williams. >> real grass. real mud. the way the game use theed to be. >> used to be. better pictures. because it wasn't as antiseptic >> in spite of the changes. be exactly the same. his camera. john blackstone, cbs news, san francisco. >> that's the overnight news for this thursday. for some of you the news continues. for others check back with us later for the morning news and "cbs this morning."

>> announcer: this is the "cbs overnight news." hi, everyone. welcome to the overnight news. the zika virus epidemic has been granded a global health emergency. now it entered unpredictable new phase. the cdc confirms a person in texas contracted the virus through sex with someone who traveled to venezuela. the world health organization says sexual transmission of zika is very rare and it is the first

contracted the virus without traveling abroad. ground zero of the epidemic the brazilian city of recife. dr. lapook is there. >> reporter: the health commissioner told me zika is rampant, sexual transmission not yet documented. felt to be spread by mosquitoes and causing a devastating birth defect which is why pregnant women are so concerned. 30-year-old is pregnant with her fourth child. baby? she says she is worried but had no obvious symptoms of zika. cases of microcephaly across brazil total 4,000. several hundred suspected cases just last week. recife, is epicenter of an explosion of microcephaly, small head at birth linked to zika. government workers go door to

and spraying pesticides. in order to attack the mosquitoes breeding ground. >> a lot more mosquitoes in january of 2015 than november. this doctor took us to the situation room inside recife's health department where the city of 1.6 million is charting the infections. >> this is all recife. >> a lot of cases. >> yes. >> reporter: the health department estimates, 50,000 to 100,000 people have been exposed. 80% of the time those infected with zika don't feel sick. what do you think when you see the babies with microcephaly and you know you are pregnant? she is worried about the threat of infection because it is a very critical situation. >> really heartbreaking. >> reporter: the doctor told us this historically impoverished community needs to fiend a solution to an epidemic which threatens an entire generation. >> these children will be surviving the impact on their families. cannot be measured at this stage. apart from the scientific and

the need to do something about it. >> super bowl is just three days away. one denver broncos player will be watching the game on television. safety ryan murphy on the practice squad, wasn't going to play anyway was sent home after questioned by police at a prostitution sting. murphy wasn't charged. but the team doesn't want him to be a distraction as they prepare for the sunday big game against the carolina panthers. jeff glore has more. >> reporter: denver broncos safety, ryan murphy caught in a prostitution outside this hotel in san jose tuesday evening. the 23-year-old played in college for or gun state. questioned and released. he was not arrested. but police did issue his brother, who was with him at the time, a citation. the broncos sent murphy back to denver. in a statement, the head coach, gary kubiak, decided it was best for the team if we continued our

without him. >> a week of heavy distraction. got to handle those things. get ready to play. >> reporter: over the weekend kubiak addressed the importance of staying focused. >> to get to this point in your football career, player, team. hard to get there. i talked to them about that all the time. >> last min of the distraction for the atlanta falcons. >> 17 years ago, starting player for the falcons, eugene robinson arrested after soliciting sex from an undercover officer the night before super bowl 33. robinson played the next day. >> that could be a living example. don't mess this up. >> radio analyst for the panthers, robinson spoke with of game week temptations. >> i want my guys to know. i love this team. hey, you got a great opportunity. ach great opportunity. go ahead and seize the moment. and don't in this respect be like me. homeland security secretary jay johnston in northern california everseeing the build-up of super bowl security. sunday's game is in silicon valley and will feature technologies never used before to keep the public safe.

>> reporter: this is one of several roadblocks along the perimeter of levi stadium to keep the prying eyes of the public out. humvees, patrol cars on sight. one thing is for certain. if you come anywhere near the game, on sunday, you will be watched. and closely. everywhere you turn, in the san francisco bay area this week you will find a massive security presence. from the water to land. even in the air. quite a takeoff. the air and marine branch of customs and border protection is one of 50 law enforcement and government agencies working to keep super bowl 50 secure. video cameras are powerful enough to show me the faces of any one in the vicinity of levi

>> a structure with license plate readers and controversial trackers, that could let police monitor your phone. since the super bowl was happening in the heart of silicon valley, some agencies are trying out new technologies and including a data collection program that gives law enforcement a complete picture of what is happening by integrating video feeds with agency cell phones and radio communications. >> reporter: outside levi stadium. custom and border patrol agents, screen cargo, with x ray machines that can detect radio active material. detailed images captured with proprietary technology. but i was allowed to take a look.

this event will test those both on and off the field. interagency partnerships at state, local and federal levels. the super bowl 50 event goes without any hitch. no group has yet to claim responsibility for the explosion aboard a passenger plane in somalia. the blast blew a hole in the plane, forced the pilot to make an emergency landing. was sucked out of the hole. mark phillips has more. >> reporter: somalia's aviation director referred to the airbus developing a sudden defect. it was pretty clear what caused the defect. a gaping hole in the plane's side. one passenger was apparently blown out of the hole, his body found later. surviving passengers said they heard a tale tale bang. a somali diplomat on board, awaki kulani, recorded the scenes and said he shared the same fears as any one else. were they all going to die. all but one of the passenger and crews survived seemed because the explosion occurred early in the climb out of mogadishu. there was no violent

and the aircraft held together. that allowed the pilot. a 64-year-old serbian to land it. surviving passengers, calmly filed off the plane. in somalia, a country enduring a seemingly endless civil war militants. just another close call.

scientists are studying climate change at the top of the world glacier. 3/4 of greenland is covered in ice. each year it loses more ice then it gains in snowfall. believed to contribute to the rise in sea levels and maybe worse. sharon alfonsi traveled to the arctic circle to see what the researchers have discovered. >> great to see you.

>> reporter: who did you upset to be put out here. >> the gods. >> the gods. >> keith nichols is an expert drilling in remote places. in terms of remote this would be really hard to beat. feels like you are on another planet. >> can't take a walk around here. expecting scott yo to beam you up. it is extraordinary. >> reporter: nichols and scientists are drawn to this sliver of greenland in part by the satellite images. in 2010, a chunk of ice, four times the size of manhattan, broke off. then, two years later, another large chunk came down. the glacier has receded by 20 miles in five years. nichols and his team are trying to drill beneath it. >> this is a lot of work. difficult conditions. what do you hop to learn? >> what we are trying to learn how the ocean is interacting with ice, momenting it.

change. they heated melt water from the glacier to make a hot water drill to pierce through the 300 foot thick ice. there has to be serious challenge to running equipment like this in this kind of weather? >> the biggest challenge we have got water. it is very cold. so if you have water freezing in hoses that can be devastating. it's for the projects. >> this is the moment the coring machine struck the bottom of the sea floor. a half mile beneath the ice, they made history. it was the first time any one has ever collected sediment from beneath the ice shelf in greenland. >> the ocean beneath is probably the least accessible part of the world ocean. and just getting access to that

we are concerned. the ice shelf extends from the glacier and floats on the ocean. they believe it acts like a dam, holding back ice from sliding into the sea. if it goes away, sea levels go up. is there a sense of urgency in the work that you are doing? >> the sea level rises, the big question we are trying to get at. and peterman glacier, this experiment here, gives us an opportunity to get at the processes, and try to understand the basic physics to how that can happen. >> our visit to the ice camp was cut short. our pilots warned of something, ice fog moving in. and could strand us here for days. we high tailed it back to the helicopter. heading to another outpost of the expedition. what the scientists call boulder camp. set up on the edge of peterman glacier. steve marquatt and geologists have been here for weeks gathering samples from rocks. >> this was probably deposited when the ice was maybe a few hundred to few thousand feet thicker.

talking about, 600 feet of ice above us. >> above where we are now. >> above where we are now. peterman would have been much larger, dropping the rocks all over the surface. >> to the person at home who is looking at you guys chipping at rocks why should i care about this? >> we know if you warm the planet up. glaciers respond. they melt. the question is at what rate? how fast is that going to that pen? where is if the going to happen? where are the vulnerable spots in the ice sheet. to understand all that you have to understand how the ice sheet, what controls an ice sheet. we need to understand this glacier to provide a better prediction for the ice sheet. that matters to us because of sea level. if the glaciers can respond die namingly, we should all be concerned. because the that can create dynamic changes in sea level and flood infrastructure. we need new know that planning for the future. >> reporter: we camped out next to the scientists. with 24 hours of light. we slept in the tents under the

in the morning, we were shuttled out to meet the swedish ice breaker making its way around peterman glacier. it supports the scientists on land and acts as a floating laboratory. named after a norse god who sought wisdom. it is home to 50 climate scientists from around the world with similar convictions. their work is funded mostly by the swedish government. and the u.s. national science foundation. larry mayor, is one of geologists on the ship. and using sonar to map the ocean floor. creating the first detailed maps that show how peterman glacier slid into the sea. see it like skid marks of a car at an accident scene. >> yeah, the ice went here. the ice went there. we can see it. oh, stopped here. >> reporter: how much of the world's oceans have been mapped with detail.

>> reporter: you can make the trip to peterman glacier a few weeks each summer when the ice melts enough to allow passage. >> see the blocks of ice drifting by. >> reporter: allen mix is running the ship's coring operation. trying to grab sediment from the sea floor. >> actually the coring site is under the block of ice. we just can't get there. we are trying to drift with the ice and sort of snook up on it. gently. >> reporter: it is hard to sneak up on anything in an ice breaker. he doesn't so much as sail, as it does smash the ice like a 13,000 ton hammer. once in position they throw a piston core, like a dart, at the bottom of the ocean. >> that doesn't sound good. >> after multiple attempts.

hit it with a gravity core. >> a core sample look this is collected. inside the ship's lab, the multiyear process of investigating those cores, begins. what is your best guess. how old is this? >> so the base of this core -- probably is no more than 10,000 years. >> reporter: ann jennings with institute of arctic and alpine research. she says each core holds clues about peterman glacier's past. >> we didn't really expect to find things living under the ice shelf. we have. >> what have you found? sivisivides-storfi. >> easy for you to say. >> it is a seashell. single celled animal. >> reporter: the single celled animal like all living creatures

scientists to determine when they lived. take the depth scale here. convert it to age. then we can say when did the ice retreat? how quickly did it retreat? was there a lot of melt water coming out? >> you can get all of that from what looks like mud? >> yes. >> reporter: after a week in greenland, we headed home. but the scientists kept working. taking advantage of the final days of the short arctic summer. the 66 core samples they collected during their month at sea will be studied by scientists around the world for decades. >> this is the largest core repository in the world. >> a paleo climatologist at columbia university. he says cores collected in greenland are like a black box of the earth's inner workings. this one he collected south of greenland. >> this is today's climate. we have had 10,000 years of relatively warm climate. then we go, 10,000 years in the past. boom. there is the last ice age. this is when long island was formed. cape cod was formed.

this is filled with these rocks. ice rafted treditis. this period. whoa, a warm phase. cold phase. then another warm phase. short cold phase. longer warm phase. boom, another ice age. so you have had, cold, warm, cold, warm, cold -- warm. today. you can see the full report on our website. cbsnews.com. the overnight news will be right back. 're new liquid gels. and you're coming with me... you realize i have gold status? mucinex sinus-max liquid gels. dissolves fast to unleash max strength medicine. let's end this. dry spray? that's fun. it's already dry! no wait time. this is great. it's very soft. can i keep it? (laughs) all the care of dove... ...now in a dry antiperspirant spray. living well your immune system works hard to keep you

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the wounded warrior project again finds itself in the cross hairs of those who say it is wasting money that could be spent on america's wounded veterans. a cbs news investigation found the organization spent millions of dollars on lavish parties and expensive conventions. now the watch dog group, charity navigator put the wounded warrior project on its watch list saying it spend 60% of the money it raises providing veteran services. chip reid has been covering the story from the start. >> reporter: the nation's most prominent veterans charity is facing criticism from more than 40 former employees about how it

we asked mark owens, former director of tax-exempt organizations at the irs to review the wounded warrior projects, tax documents. what was your biggest concern in reading the forms? >> that i couldn't tell the number of people that were assisted. i thought that was truly unusual. if the organization is asking for money and spending money, purportedly spending money to assist veterans, i would look to know. >> reporter: wounded warrior project says 80% of their money is spent on programs for veterans because they include promotional items. direct response advertising and shipping and postage costs. ic they take that out, and it looks like charity watch dogs, say 60% of donations go to help wounded service members. >> the ceo said fund-raising should and can be included in the programs and services. your response? >> well, i would be curious to know how asking people for money equates to the assistance wounded veterans. >> steven nardizzi, ceo since

in 2014 paid $500,000 in line with similar sized charities. many former employees said they thought it was too much. nardizzi defended his salary to our norfolk affiliate last april. less than 1/10 of 1% of donation that come in. i am running an organization that is helping hundreds of thousand of warriors. >> reporter: last year, wwp gave $150,000 grant to a group that defends higher spending on overhead, executive salaries and fund-raising by charities. nardizzi says the more money the charity raises the more it can spend on veterans. >> if your fixation is spending the most on programs. that's feeling the good. not necessarily doing good. you can run program activities. spent a lot of money. >> charity watch dog says his biggest concern is that the group is sitting on a $24

and not enough of it is being spent on veterans. >> it would be helpful if the hundreds of millions of dole lars are being spent to help veterans in the shorter term. being held for longer term. >> the cbs overnight news will be right back. >> i'm alex trebek. if you're age 50 to 85, i have an important message about security. write down the number on your screen, so you can call when i finish. the lock i want to talk to you about isn't the one on your door. this is a lock for your life insurance, a rate lock, that guarantees your rate can never go up at any time, for any reason. but be careful. many policies you see do not have one, but you can get a lifetime rate lock through the colonial penn program. call this number to learn more. this plan was designed with a rate lock for people on a fixed income who want affordable life insurance

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millions of people in the midwest are still digging out after the week's massive snowstorm. heavy snow and powerful wind knocked out power. for schools and businesses forced to close and triggered flight cancellations from colorado to northern michigan. the harsh winter weather isn't trouble for everyone. one businessman is transforming snow and ice into a castle of his own design. jamie yukas has the story. >> reporter: piece by piece. day and night.

into a masterpiece. it is manmade using icicles. nearly a quarter million of them. >> i've got to be one of the luckiest guys. >> it began as a hobby for brent christianson. the kids and i would build igloos, ice rinks, and using icicles and spraying water as a way to build. >> from his backyard to now a $2 million business. this year, four crews are creating ice parks in canada, utah, minnesota and new hampshire. warm weather forced a late start in new hampshire. his team of 20 artisans worked 14 hour days for three weeks. spraying 5 million gallons of water in temperatures as low as 2 degrees. it opened last weekend and offers chills and thrills for all ages. >> we've got slides. mazes made out of ice. and canyons, and tubes. >> this park is open day and night. with the help of thousand of embedded led lights. >> they go, right. blue, green. we have them synchronized to music. >> reporter: work continues on the sculptures throughout the season. some will grow to as high as 40 feet.

also make a living from it. i can't thing of anybody to trade places with. >> the king of ice castles even if his reign lasts as long as