roxana saberi has more on the plight of the polar bears. >> reporter: this glimpse into the private lives of polar bears from their point of view is shaky but revealing because as nine female polar bears dove, hunted, and courted over three recent springs off the coast of alaska, scientists tracked them through colars that recorded video, location, and activity levels. they say what they found was worrying. >> you see the chin of the bear right here. >> reporter: george durner and researchers at the u.s. geological survey and university of california santa cruz say more than half of the bears were burning more calories than they took in through their main meal-- seals. >> if they don't do that, they're going to lose weight. and if they lose weight, then there are other things that come into play with their health, their ability to reproduce, and so forth. >> reporter: the scientists blame climate change for riegz disprurs dwindling arctic ice, forcing polar bears to travel father and swim longer to find food. >> say the sea ice melt occurs earlier in the summer, then we're essentially pul

reena. >> ninan: roxana saberi, thank you for that report. well, communities along the confidential coast are still recovering from last month's deadly mudslides. some who lost their homes are complaining that their insurance companies are disputing their disaster coverage. here's carter evans. >> reporter: the damage from the torrent of mud that plowed into beth prinz's montecito home is extensive, but when she called her insurance company emm u.s.a.a.... >> he said we don't cover this type of exprb that's it. >> how many people are fighting with their insurance companies? is there a particular company? >> u.s.a.a. >> u.s.a.a u.s.a.a. >> u.s.a.a., they're notorious. >> nationwide. >> it is frustrate for homeowners. >> reporter: california commissioner dave jones said most who lost their homes to wildfires were covered while those with with mud damage and no flood insurance are still waiting but state law is clear when one disaster leads to another. >> the indications are that the fires did cause mudslides and they should pay claims. >> repor

roxana saberi has the latest edtails. h reporter: fragments of the russian plane scattered across a snowy field southeast of moscow. russian officials say all 65 passengers and six crew members on board died. flight 703 took off from moscow's domodedovo airport on sunday afternoon. it was heading to the city of orsk in central russia, but einutes later the aircraft disappeared from radar screens and went down about 25 miles from the airport. this witness described hearing an explosion that made his house tremble. another said she saw shattered body parts in the field and no survivors. most of the victims were s.portedly from the orsk region. one was swiss. at the local airport, relatives sobbed, and paced as news of the crash spread. russian media said the airliner had been flying since 2010 with s two-year break because of a shortage of parts. rut a spokeswoman for russia's saratov airlines, which operated oe plane, said there were no concerns about its condition. russia's aviation safety record was poor in the 1990s and

roxana saberi visited dunblane, scotland where a mass shooting in 1996 led to big changes. >> reporter years since the gunman opened fire at dunblane primary school in scotland. >> she was killed. >> reporter: mick north relives that tragedy with each mass shooting in america. >> you tend to pick up on things that relate to what has happened in your own life. >> reporter: north's daughter sophie was one of the 16 children killed in dunblane. >> i just said no more guns. turned out that i wasn't the only one. >> reporter: he and other parents pushed politicians to prohibit private handguns. today britain has some of the strictest gun regulations in the world. >> if you want to buy a semi- automatic weapon or handgun at a shop in britain, you can't. they are now both banned. and if you want to buy a high- end shotgun like one of these that could take up to six months to clear all the regulations. >> you can only use manually loaded rifles and shotguns for hunting or hobbies at shooting clubs like this one in london. member sherman stroble says the police will also visit your home to make

roxana saberi in london thanks.g to the black experience immigration officials confirm... agents detained 150 people in a, in the past few days. >>> good morning, it's 8:25. i'm michelle griego. federal immigration officials confirm agents detained 150 people in northern california in the past few days. they also criticized oakland mayor libby schaaf for warning the public about the impending raids. >>> the san jose city council has improved an ambitious climate plan. the goals are to reduce greenhouse gases as defined in the paris climate accord, produce more solar power and lower per capita water consumption. >>> stay with us, traffic and weather in just a moment. >>> good morning. we are tracking an accident that's keeping 280 riders very slow and in the red. this is in the southbound direction as you approach 380. the crash is just before 380 has one lane blocked and it is backed up to about serramonte boulevard at this point. you have about 15 minutes to 380. if you are trying to get to sfo, give yourself some

here's roxana saberi. >> good morning. over that shooting led to what became some of the strictest gun legislation in the world. we sat down with a man who campaigned for those laws. he now has a message for people calling for an end to school shootings in america. each mass shooting in america echoes what happened in scotland. >> you tend to pick up on things that happened in your own life. >> reporter: in 1996 he and other parents rushed to dunblane primary school after a gunman armed with four handguns opened fire there. >> absolutely newsrooumb. i can't believe something like this happened. >> reporter: a teacher and 16 children were killed including their daughter sophie. >> she was shot five times. >> five times. >> reporter: among the survivors was future tennis star andy murray who's still clearly affected. >> i think everyone knows that i'm extremely proud of where i come from. >> reporter: the shooting here devastated the town of dunblane and the entire country and led to a nationwide campaign to ban private hand