over the weekend. bowers is the third child to die from a shooting in the city since saturday and all of them were innocent victims of gang-related gunfire. and breaking overnight, a setback for organized labor courtesy of workers at a south carolina boeing plant. they voted roughly 3-1 against joining are the machinist union. fewer than 2% of south carolina, about 52,000 are union members. the union's main organizer says boeing put a lot of money into influencing its workers. >> i think you know, a lot that comes into play is human nature. boeing put on a very strong smear campaign, you know, i think it might have caused some people to change their focus as what it was really fighting for. >> manufacturers have been drawn to the south because of its anti-union history. the machinists have to wait at least a year to petition another vote. north dakota's governor has sign add emergency evacuation or

protests are. it's the latest attempt to clear the camp that served as the base for those opposed to the nearly $4 billion project. protesters now have till february 22nd to leave, that's the same deadline set by the army which owns the land. the governor says the camp poses a threat to the protesters and the environment. researchers have made a major breakthrough in detecting autism. brain scans might help predict autism in infants before symptoms appear. they used magnetic resonance imaging to examine the brains of high risk infants and able to correctly identify 80% of the criteria needed to predict the disorder. early detection could lead to intervention and therapies. a global new study confirms that vitamin d supplements can help prevent colds and the flu. this is the strongest evidence yet that the supplements may have benefits beyond bone and muscle strength.

benefit for those with a high environment d deficiency. previous research found mixed results on the benefits of vitamin d supplements. good news for us because we don't get a whole lot of vitamin d naturally from the sun. >> what is vitamin d? we'll have to pop a pill.

pocket, i am pumped. >> i would be, too. but i mean, just imagine all those years you're there just clicking and watching old reruns of i love lucy" and right there sitting is your -- you're watching who wants to be a millionaire and it's right there behind. >> you coming up the scramble to avert disaster at america's tallest dam. officials in northern california now say the crisis is far from over at the orroville dam. plus, what we're now learning about what officials were told more than a decade ago. >> is there some way that the weekend managed to slip a disk track into his latest single about justin believer? it has fans everywhere asking what do you mean? what do you mean. >>. ♪ what do you mean >> first here's a look at today's forecast. "world news now" weather, brought to you b

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up. so what you're looking at is called the fire fall. it's got visitors flocking from all over the sun hits the horse tail fall at just the right angle making the water to appear like lava going over a cliff. it's a natural phenomenon occurring for about two weeks every february and it lasts only for a few minutes. >> so cool. >> during sunset. >> sunset. >> all right. for the north crews are working in a race against time scrambling to try to repair critical damage to america's tallest dam. >> even as thousands of families can return home they're being told to be on hot stand bid ready to leave at a moment's notice. >> reporte a

dam. new storms and heavy rain just hours away. 1,200 tons of material now being brought in every hour to reinforce the oroville dam's emergency spillway, including giant bags of rocks. officials say the lake levels falling 20 feet since sunday. this is how the release of all that water is affecting people some 30 miles downstream. they're covered in several feet of water. abc news learning environmental groups warned state officials about potential erosion issues with that emergency spillway more than a decade ago. the temporary fixes to this main spillway and the emergency spillway will be challenged tonight as those storms move in. the permanent fixes they have planned could cost as much as $00 million. kayna whitworth, abc news, oroville, california. >> you have to feel for those people. they were just finally allowed to go back to their homes. they may have to be evacuated again. >> the government had been warned for quite som t

the dangers of this dam. it's being called the new culinary craze. >> from black salt to pink salt, do gourmet salts really live up to the claims and the price tags? od. i just took new mucinex clear and cool. ah! what's this sudden cooling thing happening? it's got a menthol burst. you can feel it right away. wow, that sort of blind-sided me. and it clears my terrible cold symptoms. ahh! this is awkward. new mucinex clear & cool. feel the menthol burst. while powerful medicine clears your worst cold symptoms. start the relief. ditch the misery. let's end this.

♪ it's the time of the season for loving ♪ ♪ >> so it's one of the world's oldest and most common seasonings but salt also happens to be leading off a new culinary craze. >> fans say gourmet salts not only taste better, they have health benefits ranging from improving digestion to detoxi detoxifying the body. do they live up to the claims in here's our own salt bay. mara schiavocampo. >> salt, the

fancier than ever. gourmet varieties like him mail lan pink and hawaiian black showing up on store shelves costing anywhere from $10 to more than $270 a pound. some chefs saying high end salts are not only tastier but also better for you. >> the great thing about this salt is all of the trace minerals that are still intact naturally. >> healthier salt based on its dna to the human body. >> the health benefits associated with high mineral salts are not entirely clear. the thinking is minerals are porl important to human health. if you're going to choose a salt, you may, as well choose a salt that has more minerals in it. the reality is it may or may not make a really big difference. >> reporter: but do they taste better? we wanted to find out. gma asking chef james to prepare a taste test. he seasoned chicken breasts with three different salts, kosher

salt at $10 a jar, and french sea salt at almost $50 a jar. we invited three food professionals, a chef, a cookbook author and a culinary student to dig in. >> on three, flip your card around and show me which one you like the best. one, two, three. >> two of our tasters picked the most expensive salt as their favorite. >> i actually liked that it was -- you really got the salty flavor of it. >> reporter: when it came to picking the priciest salt, our cookbook author was fooled by the affordable kosher salt thinking that was the most expensive one. >> my hats off to kosher. i really thought it was the fancy one. >> reporter: gourmet salt manufacturers tell us they don't make specific health claims, but believe their mineral-rich salts are a better choice. according to one saltmaker, natural minerals in even small amounts can certainly come into play with our nutrition. mara schiavocampo, abc

york. >> this is a big debate now over salt because regular table salt is rinsed and you know pasteurized or something along those lines to take out impurities but they also have mineral s youneed. that's why people say the natural salt is better. it's very confusing. > it is very confusing. there's no debate over the prowess of salt bay. so let's talk about our favorite salt bey. here he is showing off some of his moves to simone biles. >> so both of them were at the larose world sports awards on valentine's day. the olympic medalist gymnast shared this video on twitter, happy as can be, tweeting out got my food seasoned by the one and only. >> it's almost like a cobra move the way he does it. >> it's like when you do is the gym this way or that way. he's definitely trying to show off the salt bey guns. >> how huge this guy is. leo dicaprio was there in his

>> no one was paying attention. everyone was lack looking at salt bey. >> i have an oscar now. salt bey is over there.

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thing this morning. so you saw "hidden figures" topping the nonfiction best seller list. question this morning, could there be a hidden meaning inside the weekend's latest single? >> it's apparently the latest step in the singer's on going feud with justin bieber who we just heard there all over selena gomez. here's abc's dan harris. ♪ i'm trying to put you in the worst mood ♪ >> reporter: it's the beef that keeps on giving. the friction between celine nape gomez and justin bieber lives on and this time it's about a certain star boy. ♪ what do you mean >> go mess has been spotted with the weekend over the past several weeks and it seems to have the biebs asking what do you mean? ♪ what do you mean >> following the weekend's grammy performance. ♪ i feel it coming, i feel it coming babe ♪ >> this past weekend, bieber took to instagram live to troll his fellow canadian. >> at the moment, star

the weekend. >> reporter: only to burst out in laughter. this post came just weeks after bieber told tmz he can't liston the weekend. >> can you listen to a weekend song? you can't? why not? >> the weekend remained silent till he dropped a new song called "some way," longside nav in which he an apparently calls out the biebs. the lyrics go. >> i think your girl fell in love with me. ♪ ♪ i just took that check and i know you feeling some ♪ >> biebs has yet to respond to the latest track, don't expect a sorry anytime soon. ♪ say sorry >> dan harris, abc news, new york. >> the weekend may actually want to to apologize but bieber is now saying it's too late now to say sorry. >> and then. >> and then he said, what do you

this morning on "world news now," president trump changing his tune. >> after forcing the resignation of his national security adviser, the president is refusing to answer questions on the subject saying only that the media are to blame and calling that general that he just forced out a "wonderful man." our chief white house correspondent breaks it all down. >> new details on the controversial cabinet pick who suddenly pulled his name and why video surfacing of his ex-wife once on oprah may have something to do with did. and it's a dangerous scene in san francisco. people have been evacuated from multiple buildings after a concrete slab got loose dangling over the city streets. meet the mermaids. we're not talking about erielle and her flounder friend. these are real life mer folk. women and men who would prefer us to try on their