>> my heart out to the families who lost loved ones. >> reporter: the ntsb on scene investigating the cause. one thing missing from the scene, skid marks. the bus may not have braked, abc news, baltimore. concerns about a spinal cord illness in the pacific northwest. it may be to blame for the death of a 6-year-old boy in seattle. one of nine children treated in washington state just this fall. the cases c illness known as afm, and it begins with weakness in the limbs, loss of reflexes, and possible paralysis within hours. 89 cases reported in 33 states this year. commuters in philadelphia face another day of transportation woes as a transit strike enters its second day. the strike was not supposed to affect commuter rail lines and services in areas outside the city, but the transit agency said striking workers were

that's caused train cancellations during rush hour. a car worth $185,000 is among those involve in a multivehicle accident in los angeles. take a look at what's left. oh, this is a bright green mclarne sports car. one car left the vehicle, and that vehicle may have been racing the mclaren. not much is left of the it's hard being a kitkat lover. he left his car for a few minutes with a candy bar in plain sight. when he came back, the candy bar had gone bye bye. the thief said he was hungry. he tweeted a picture, left the car for 15 minutes, and i came back to this. college, man. >> could have been so much worse. >> could have.

>> the almond joy. all right. an event held last night in new york that we're very proud to mention here at abc news, the annual stand up for heros fundraiser. >> the charity founded by our own bob woodward on the right, and his wife, after bob was injured covering the war back in 2006. in ten years, it's raised more than 33 million to support wounded service members and their >> bruce springsteen was among the entertainers. the boss performed at the event every year it's been held. great going by everyone involved. really, really great event, and, of course, bob and his wife came up with the idea when he was being treated after being hurt in iraq, and they noticed that people weren't getting -- weren't getting the kind of care or kind of support that he was,

pays for family members to sit by the bedside, and so -- >> $33 million after all that time. >> impressive. >> it's great. well, coming up, putting your kids on a green diet. >> why a growing number of pediatricians say no to smart phones and tablets and other devices for young children. >> and our controversial encounter with lil' wayne. reclusive hip hop icon gave our cameras rare access to how he responded to criticism that his degrading to women. first, a look at today's high temperatures. "world news now" weather brought to you by united health care. approaching medicare eligibility?

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a dangerous effect on the youngest user. >> mounting evidence that excessive screen time has a negative impact on brain development of young children, and parents are urged to put their kids on what's called a screen diet. here's wabc with more. >> reporter: 5-year-old dean, perfectly happy playing ball with his brother, jack, and a friend, but when they play on the iphone or ipad, well, dean's mom knows all too well how it ends. >> give my t >> because it's time to be off the ipad. >> no. >> reporter: it gets worse. >> take it off. >> i want the ipad. >> no more. >> yes! >> goes into a full temper tap trum. >> reporter: in fact, dean runs away at the very suggestion that he go outside to play. >> lately, we pulled it completely. they don't know how to not be on it. >> reporter: and studies are helping us understand why.

released in the brain while kids play video games, not unlike the way any addict feels after a fix. this is a controlled one where the kid is the master, making it harder to go back to the real world. >> because the real world, as it were, it much less predictable, much less controllable than those video games are. >> we're going to go play upstairs. >> reporter: here's something limiting usage. dawn, who runs workshops for parents and kids, has one in her home. >> refer to the paper. you know, this is what we agreed to. it's in print. you signed. you can't go back on it. >> reporter: experts say it may not work for every family, but -- >> i get addicted, my brother gets addicted. >> reporter: that teaching kids a little self-awareness could go a long way. channel 7, eyewitness news.

too much screen time can affect developing brains are pretty important. >> a lot of parents trying to do it to make their kids more educated, but, apparently, studies indicate it's harming more than helping them. >> like anything. in moderation, you're okay, right? >> yes. except alcohol. kidding. >> except lil' wayne. >> rare access. controversial, isn't he? given rare access to him.

? ? okay, extremely rare for a pop icon. >> i like hip hop. >> i do, but who lil' wayne doesn't often give interviews, but he gave the green light to our cameras. >> he opened up about what critics call offensive lyrics, and the memoir written about his life in prison. >> up all nightline with linzie davis. >> reporter: lil' wayne has been making music for nearly 25 years

calculated, but raw and explicit. what do you say to those who call your music degrading? >> no, that's what you think about the music, if that's what you categorize it under, then so be it. all those things, made me who i i am, and i'm a very successful man. please keep looking out for more because it's coming, baby. >> reporter: to say this father of four understatement, the self-described gangster says he's misunderstood. >> that's the biggest misconception, like i'm rude, they meet me, and i'm humble, whatever, but i'm from the south. i have to be respectful because i have someone to answer to and that's my mom. >> reporter: the journey started in 2013 in his private skate park constructed in miami.

amsterdam backstage at a sold out performance. he's now to release a memoir. >> thank you. >> reporter: gone til november is a diary chronicling the eight months in reichers were an illegal weapon possession, but outside, the celebrity status shaped his perception, stirring controversy on fox sports when he said he personally doesn't see racism because the fans are white. >> i thought that was a -- there was no such thing as racism. >> a lot of backlash from people about that. would you change what you said? >> not at all. >> reporter: what's your thought on black lives matter? >> what is it? what do you mean? >> reporter: an idea called black lives matter thinking that the rest of america didn't seem to understand that, that black lives matter. >> it just sounds weird, why put a name on it? it's not a name, it's not

police, there was a [ bleep ] reason. finally young black rich [ bleep ] if that don't let you know that america understand black [ bleep ] matter these days, i don't know what is. don't come at me with that [ bleep ]. my life matters, especially to mom. >> reporter: do you separate yourself from it? >> i don't feel connected to do with me. you do i'm connected. i'm a gang banger, man, i'm connected. >> reporter: ending our interview angerly. [ bleep ]. >> reporter: lil' wayne in the business of making music without apologies. >> i can't wait -- >> i'm going to do that. >> i want a raw tape of all of that. >> wow. >> most captivating television. i didn't understand what he was saying, but half the songs i i don't understand. >> embarrassed for him.

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all right. we have good news for you this morning if you feel that you might be a little obsessed with facebook. >> and who isn't? the adorable halloween costume that's been like by nearly a quarter of a million people. here's abc will gans with two truths and a why. >> good morning, you two. first up, a true and very new

facebook users who definitely like. a study of 12 million active facebookers suggesting the social media site is associated with living longer. users 12% less likely to die in a given year than nonusers, but only when it's serving and maintaining real world social connections. the lead researcher says proving a link to facebook and living longer, but they are not exactly sure why, but, hey, it's another excuse to log in and halloween selfie you looked so great in. up next, a picture that's a little too true for moms out there. take a lack at 7-year-old from indiana who decided to dress up as a mom for halloween this year. in a photo, there's dark circles, two babies on board, and a track suit. it's a total mess. the costume, apparently all her idea, has been liked by 200,000 people on facebook.

the bear in ring bearer. why did this couple let a 200 pound grizzly bear crash the wedding? perhaps because they are from moscow and traditions are different? i don't know. the bride is wearing red, after all, but the couple invited a local domesticated grizzly to shoot photos, and he obliged wearing a bow tie in the ceremony. they presented the blushing bride with flowers and was the what about a round of paws for this couple and the grizzly who made the new in-laws seem tame at the wedding. >> it was actually putin's halloween costume. it was not really a bear. >> i love that little girl as a

this morning on "world news now" clinton and trump with different tones on the trail. >> addressing a crowd in florida, clinton lays into a shouting protester saying she is sick and tired of some trump supporters. meanwhile, trump seemed like a changed man, keeping the tone positive, and in less than a week >> a scuffle in ohio, and a scene the officer squad car, like something out a video game, how did it play out? >> then before they bid farewell 1600 pennsylvania avenue, for the first time, america's first family opens up their private residence to photographers.