america? and the buzzer beaters at the oscars. the actors and then the music interrupting them. how do you tell cuba gooding his time is up? tonight, our picks and yours. good evening on this saturday night. as we come on the air this evening, the strongest words yet from the white house on libya. president obama for the first time calling for moammar gadhafi's ousting, and word of another major defection, the loyal nurse so often at gadhafi's side, has left. and look at these images in eastern libya where opposition forces have taken one of the presidential palaces, discovering among others things, books on sorcery. we will get to it all tonight, but we begin with christiane amanpour, now on the ground, leading our coverage from tripoli tonight. >> here we are in tripoli, the

libyan capital at the heart of the stronghold of moammar gadhafi. what some say may be his last major hold-out. we arrived at the airport aboard one of the few commercial airlines coming from europe. what we saw at the airport was a scene of reality, a sea of humanity outside. looks like workers who have come here from all over this part of the world, from the middle east, from other parts of africa, and who have pitched up at the airport for the last several days with no tickets and very little money. they're there with blankets. they have what little food they can muster. they're sleeping. we saw people sleeping, some pitching makeshift tents. huge piles of garbage. there are libyan police patrolling the area. they're trying to get into the airport, but they're not able to get in because they don't have the tickets or the money to get out. it's calm, but they're not able to leave. for our part, we came into the city. it's calm, all we can tell you is that the roads were clear. we have heard tiny amounts of sporadic shooting just this night, but we're going to have

major interviews you'll see and keep updated on "this week" on sunday. david? >> christiane amanpour in tripoli tonight. thank you, and we'll be watching tomorrow morning on "this week." >> we have seen the images, the millions of people in a desperate scramble to get out of libya even as the regime tries to paint a picture that they can still survive this. jeffrey kofman is on the border with tunisia where he saw the chaos spilling over firsthand today. >> reporter: a river of refugees is now streaming across libya's western border into neighboring tunisia. 45,000 so far, many with harrowing stories of escape. these men told of being robbed at a highway checkpoint by little boys with guns. what kind of weapons did they have? kalashnikovs. there is a similar scene on libya's eastern border with egypt where the libyan government is no longer in control. in the capital, moammar gadhafi is still in control but increasingly isolated at home and around the world.

today, another defection from his inner circle, and this one will hurt. the legendary blond ukrainian nurse who has been at his side for years has reportedly deserted him and is heading home. gudaffy's control of his country shrinks by the day, the spin continues. television broadcasting images of a calm tripoli with people going about their daily business, no protesters in sight. it's a difficult fiction, though, to maintain in the age of the internet where the bloody crackdown can be seen on youtube. streets blockaded, burned-out buildings, and anti-gadhafi graffiti scrawled on walls. one of the reasons we're seeing such a large exodus is libya is a country of only 6 million people. its economy driven by oil, depends on 1.5 million foreign workers, most of them men like these from egypt. this is not their revolution, and they want out. tunisia is struggling to cope. >> if they stay here, it will be a mess.

a real mess. >> reporter: and what a mess. with moammar gadhafi vowing to fight to the end, we can expect to see much more violence and bloodshed until he's toppled, and we can expect to see a mountain humanitarian crisis on libya's borders. david? >> jeffrey kofman, thank you. as jeffrey knows, the capital of libya, tripoli, is ground zero in the battle for the country, but the second largest city is in the hands of rebels, and they're organized. alex for the first time in the nerve center of the opposition. >> reporter: this is a libya without gadhafi, where he's openly mocked and there's unbridled jubilation. >> i have never been as happy as today in my whole life. >> reporter: despite the ecstasy, the violence that has killed hundreds, maybe thousands, is still fresh in their minds. we were shown the 50-caliber rounds gadhafi's forces used against the people. government buildings were burned

across town by protesters who were never allowed near them, let alone inside of them. so now parents are bringing their kids, taking pictures, treating it like a day at the museum. in the supreme court building that was also torched, we got our first look at what is a nationwide nerve center for the revolution. the level of organization is astonishing. in one room, editors prepare a daily newspaper. in another, slick pr operation. preparing videos for the outside world. there's security and committees organizing food distribution. they're even helping families track down loved ones abducted by the gadhafi regime. today, they're free, people are pitching in, celebrating, but the people say libya won't know real freedom until gadhafi is well and truly gone. >> an extraordinary look inside the opposition tonight. and as we reported at the top of the broadcast here, the strongest words yet from

president obama. the words come just one day after the obama administration froze all libyan assets here in the u.s. john hendren is in washington tonight with more on what the president said. john, good evening. >> reporter: good evening, david. it's an extraordinary statement. president obama is demanding that moammar gadhafi step down immediately. this came after a phone call with the german chancellor angela merkel in which both leaders, we're told, expressed deep concerns over what they called the brutalization of the libyan protesters. the white house issued a statement in which president obama said quote, when a leader's only means of staying in power is to use mass violence against his people, he has lost the legitimacy to rule and needs to do what is right for his country by leaving now. the two leaders also urged the international community to take strong measures to hold libya's government accountable, but they didn't say what the measures should be. >> john hendren in front of the white house tonight. thank you. in the meantime from egypt this evening where the revolution toppled president

mubarak, an alarming scene. the military police using force against protesters, just before dawn today, beating them and making arrests there. protesters feel the military's patience is wearing out, but the council has separated itself from the issue, theying they won't issue orders to stop the attack. we have been watching a massive system brewing off the west coast, an arctic system they rarely get there. while there has been some snow in chico, california, to the north, they haven't seen it yet in san francisco, a city that hasn't shoveled snow in more than three decades. mike von fremd is tracking the storm tonight. >> sierra, california, was hit the hardest, and forecasters mistakenly warned residents in major cities from san francisco to los angeles that the most powerful snowstorm in 30 years was about to blanket their front yard. >> i'll be crazy bummed out if by the end of the night i have not experienced snow falling on my nose. >> reporter: weather experts dug out historic pictures.

this would be the first snowfall on san francisco since 1976. and on the internet, an artist envisioned san francisco as a ski resort. the excitement was building until people simply looked out their window. >> everyone woke up this morning and were thinking there was supposed to be snow on the ground, but the cold front was still moving through the area. >> reporter: the precipitation moved in before the arctic blast from canada, so most people got a little bit of rain, and there were some very disappointed youngsters in los angeles. >> what were you looking forward to today? >> snow, but there's no snow. >> no snow. boo-hoo. >> it's expected to be cold here in los angeles tonight, but by tomorrow's academy awards, it will be sunny and nearly 60 degrees if the forecasters get it right. david? >> i feel awfully bad for you without a coat on, doing the weather report. mike, thanks very much. there were protests all across this country today, people coming out to support those union workers who rallied

at their own state house in wisconsin all last week. a state where the governor says he needs to cut benefits and bargaining power because there's no money. protesters from new york to california took the side of the workers. here is jeremy hubbard. >> reporter: they gathered by the thousands from san francisco to d.c. to new york. some wearing cheese heads, a show of solidarity with their wisconsin union brethren whose now 12-day-long battle with that state's governor sparked this nationwide rallying cry. >> we're trying to bust the public sector unions. they have largely busted the private sector unions, and they're coming after us. >> under attack is how these union members see themselves, faced with republican-backed legislation in wisconsin, indiana, ohio, and new jersey that would slash bargaining rights and benefits for state union workers. >> it doesn't matter if someone belongs to a union or not. we're all in jeopardy here. >> reporter: the union fury in wisconsin was front and center

at today's meeting of the nation's governors in washington where republicans blamed that state's democrats for creating this firestorm. >> i believe it's despicable we have elected officials that have left their states in order not to be on the record and do the job they were elected for. >> she's referring to the democratic senators in wisconsin who fled the state to prevent a vote on the union bill. as we saw, it's no longer just about wisconsin. dozens of states are saying we can no longer afford the pensions and benefits that come along with unions. they're threatening crackdowns, too. >> and protesters coast to coast reacting. thank you. following a health warning. an airline passenger may have exposed thousands of people to measles. a new mexico woman was diagnosed after flying home from the uk on a southwest airlines flight. measles is highly contagious to people who have not been vaccinated. there are three other cases in boston this week that are not believed to be related. and to another puzzle unfolding, this from the gulf coast. more than 70 dolphins, dozens of them babies, are washing ashore

on beaches from louisiana to the florida panhandle. and so many are asking is the bp oil spill to blame? matt gutman is back on the story tonight. >> reporter: scientists across the gulf have settled into a grim routine, scooping up beached dolphins by the dozens. and today's toll, three more infants. so, tell me, what is going on out there? >> a large number of calves are dying. many are stillborn. many are premature. many that just took a breath for a day or two and died. >> reporter: bp's well exploded in april during the middle of mating season. now it's birthing season. from the florida panhandle to louisiana, over 70 dolphins have washed up since january, at least 40 of them infants. >> in just these two months, the average is one or two. so it's a 15-fold increase. >> his teams and noaa are analyzing samples of the

dolphins' blubber, but it could be weeks before hthe results ar known. it's too early to link this to the bp spill, but researchers believe the heavy metals in the oil may have poisons the pregnant dolphins or disrupted their food chain. we were warned about this seven months ago, that the oil was -- >> changing their fishing, their food, their prey. >> and most die unseen. >> these animals are probably dying in the deep ocean, sinking to the bottom, and we may not see anything until there's a tropical storm or onshore wind. >> researchers tell us with the birthing season about to start, the worst is yet to come. matt gutman, abc news, miami. >> our thanks to matt tonight. still ahead on "world news" this saturday, as we prepare for our "made in america" series all next week here, exploring just how much of our homes are filled with true american goods, the unforeseen hurdle before we even got out. plus, an extraordinary ruunion after a baby was locked in a bank vault.

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jpmorgan chase set up new offices to work one-on-one with homeowners. since 2009, we've helped over 200,000 americans keep their homes. and we're reaching out to small businesses too, increasing our lending commitment this year to $10 billion and giving businesses the opportunity to ask for a second review if they feel their loan should have been approved. this is how recoveries happen. everyone doing their part. this is the way forward. all next week here on "world news" with diane sawyer, made in america. we're going to begin with a simple question for us all. look around you at your home tonight. how much of what you see in the living room, bedroom right now was entirely made in america?

and what difference would that make when it comes to american jobs? >> join "world news" as we set off on a kind of challenge. >> you have heard diane in recent days with our countdown to "made in america." after all, it has been the american workforce that has pulled us out of nearly every economic downturn we have faced as a country. after world war iii it was american ingenuity filling countertops with appliances, and back then, for every ten things americans bought, only one was bought overseas. today, more than half of what we buy is overseas. we found an american home and looked for anything not made in america. anything not made in america had to be removed. and even as we were flying, we had to wonder, what are we flying in? we landed in dallas, and the plane was a boeing, so at least

we got here on an american plane. boeing has acknowledged not every piece of their planes is made in america. the next hurdle -- to try to find an american car at the rental place. >> we reserved a medium-sized car. what is that usually? >> a kia optima. or a hyundai sonata. >> both are made in america. >> no. >> so what are we going to do? in the medium-sized cars, they don't have any american-made cars right now. she's going to check to see if they have one left. >> we have a jeep compass, will that work? american made. >> that will work. is that the last one? >> uh-huh. >> it's the last one? it got us to thinking -- when was the last time someone asked for made in america? >> nobody, you're the first one. >> we were off. so they live on snow white drive. believe it or not, snow white

drive, families outdoors with their children, american flags flying in their yards, and we were about to arrive. on monday night, you'll meet the brave family that invited us in and watch as we go through their house. they asgree to remove everything that wasn't made in america. could they survive without it? what was left? that's monday nights right here on "world news" with diane sawyer, "made in america." >> and when we come back this evening on the broadcast, the baby left locked in a bank vault. for three hours a week, i'm a coach.

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and finally tonight here, with all of the glitz and glamour tomorrow night at the c oscars there will undoubtedly also be this. the eternal struggle over oscar speeches. the push/pull between the actors and producers, the music and the clock, and the winners who blow right through it. >> there's no way we're doing this in less than 20 seconds. >> it's become a sort of sport

all its own. oscar winners who beat the buzzer, run out the clock. >> one second, one second. >> when the music plays or they get the cue and keep going. but really, how do you tell julia roberts time is up? >> you're so quick with that, so why don't you sit because i may never be here again. >> it's a funny situation because the time limit for the oscar acceptance speech is 45 seconds. and nobody ever sticks to the 45 seconds. so at some point, you have to yank the celebrity off of the stage. >> we asked all of you to weigh in on the facebook pages, whose speech do you remember the most? while behind the scenes, we tried to answer the question ourselves. which actors ran with it and ron, more than the oscar, but the crowd. >> wait a minute, i have to take the 74 years here, i have to take this time. >> mine is still cuba gooding. >> i love you all, cameron crowe -- >> absolutely cuba gooding. i laughed out loud. it made everyone in the universe

happy for a moment, that speech. >> the next year, he returned to present best supporting actress, and his advice -- >> take your time. don't listen to the music. do you thing. >> it was a nervous kim basinger who won for "l.a. confidential" getting on the stage and saying this -- >> i just want to thank everyone i have ever met in my entire life. >> i think my all-time favorite moment of acceptance was roberto beniny when sosophia loren goes roberto! he climbs over the chairs. >> i want to kiss everybody because you are -- >> i want to kiss everybody, he said that year. it was hard for diane and i to pick one. so we added them to the facebook conversation. we would love for you to join in with your own predictions for tomorrow night and some of our favorite moments from oscars past. you can find us on our facebook pages.

the oscars are tomorrow. good night, and have a good time. >> alan: snow in the bay area. flakes falling close to sea level this morning at half moon bay. the video. here's mt. hamilton as seen from sky 7hd. capped by a flesh -- fresh layer of snow and this video was taken in woodside. good evening, everyone. snow didn't live up to its billing, and most didn't stick. but the sheer novelty of anything white falling out of the sky was something to marvel

at. leigh glaser is near twin peaks and joins us with more on this unusual weather. >> lisa: it really is very strange for the bay area. i'm standing here at 900 feet, and you didn't have to be this high to see snow overnight. >> snow at the coast. something we've never seen in our 12 years of being here. >> lisa: the images cameed inning in to abc-7. >> now we got to start the palm trees. >> lisa: from the coast the mountaintops, to the east, mount tam to the north, and uc santa cruz to the south there was snow. small flakes found near this shell gas station in san francisco. the last time it snowed in the city was in 1976, and people wanted more. >> i was hoping it was going to snow, but there's not really a chance of that.

>> lisa: instead the sun came out, but the air was still very crisp. >> a shirt, fleece, neck scarf, and rain coat, and umbrella. >> reporter: is that enough? >> hopefully. >> lisa: temperatures are low, which is why the city of san jose opened ten warming centers. this one allows anyone to come inside and warm up during the early morning hours this weekend. the bitter cold can also be dangerous for