restricted zone actually got to the pilots or anyone else coordinating the strikes. martha raddatz, abc news, washington. >> the first tv ad of hillary clinton's ad today focusing on how republicans are trying to bring down clinton and her campaign. it features california congressman kevin mccarthy as a statement that theenghazi panel can take credit for her fall in the polls. clinton is also speaking out on the issue of gun control. >> so many of the parents of these precious children who were murdered have taken the unimaginable grief that they have been bearing and have tried to be the voices that we need to hear. >> the emotional plea alongside a mother of a young victim of the sandy hook shooting. clinton vows to tighten regulations on firearms buyers and sellers even using executive action if needed.

>> those comments by mccarthy have thrown the race for leadership in the house into complete disarray. he was once considered a shoo-in to replace outgoing speaker john boehner. now boehner has postponed the house election to the end of october and delayed votes for lower level posts until after that. a health headline about the benefits of rifting your grandparents. new research suggests inperson contact with the elderly is linked to fewer signs of depression. phone calls do not have the same effect. no word if facebook or facetime, right? bottom line is if you want to brighten a senior's day, ethem face to face. they're not into face timing. > they can skype. >> it's early october as you know. we've got plenty of pumpkin related stuff going on in a different half hour, we talked about pumpkin pizza here. >> now something completely different. pumpkin cannons are the star attraction these days on the john thompson farm in central

washington state. >> yeah, the cannons are powered by pressurized air and thomp san says had his most powerful one can launch a pumpkin nearly a mile away. that is truly a weapon of agricultural destruction. >> they apparently have walnut guns and water pump racetracks. he's got water mills and makeshift swings all of which he's made by hand, crafty guy that yuan thompson. >> and he's grown up but still a kid at heart. coming up, lack of sleep and serious consequences especially for teens. what doctors are now saying. > one students discovery in a test book and what it said about the history of slavery is turning into a national outrage. and cars that have push button keyless ignitions. who is calling them a potentially deadly hazard while demanding changes. it's an abc investigation right after our forecast map. you're watching "world news now." >> "world news now" weather, brought to you by united health

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two of mexico's most active volcanoes at it again. the ca lima volcano erupted twice yesterday sending ash and gas nearly a my in the sky. it is part of the pacific ring of fire. a few hours later a second volcano erupted this one nicknamed el po po sent a lighter cloud of gas and vapor into the air. >> air france workers angered at job cuts disrupted a company meeting at headquarters. they targeted two managers tearing their shirts off their backs. they escaped under police protection. look at that. the company is proposing to cut 2900 jobs after failing to reach a deal with their pilots. turning to the potential dangers of keyless ignition systems where you just have to have a key fob in your pocket or purse and you press the button to start your car. >> investigators have lynched at

least 12 deaths from carbon monoxide poisoning when owners walked away and left their car running. alex perez with more. >> approaching a garage. in real life, tragic results. caesar loved stopping by his parents house to share an espresso. in june this family ritual shattered. >> to walk in and have to see that. >> it's ended in your brain for the rest of your life. >> caesar sitting here with his lawyer speaking out about the morning he found both parents rin na and pasqual dead after they accidentally left their car running in their attached garage. >> i was unaware there was a problem till this happened to my parents. >> the 2013 lincoln mks had a push button or keyless ignition. investigators say reena put the

fob in her purse despite an audible warning likely made by the car. officials say the carbon monoxide from the engine built up into the garage and seed into the house eventually killing them both. to find out how quickly the fumes in a running car could turn deadly, abc news conducted a demonstration working with carbon monoxide experts to monitor levels, the bay shore fire department in long island new yorking there to help keep us safe. a chrysler 300, one of many on the market with keyless ignitions and no automatic shutoff. this garage freestanding. we covered the developments to mimic what could happen with many attached garages. we'll leave the car running. then a check every 30 minutes. two and a half hours in, 90 parts per million. that could be potentially lethal. >> at 4 1/2 hours in. >> if you were to go inside the garage and close the door, you

would probably loss consciousness within five to ten minutes and death would follow. it's just behind that door. it's lethal. >> reporter: at this point, the fire department too worried about the danger to continue. for the chrysler in our demo, there are alerts inside the car butcrit sicks say that's not much use if no one is inside. chrysler says its cars meet or exceed all applicable safety standards. most cars have some kind of visual or audible alert when the you leave the car and some an automatic shutoff. critics say that's what all cars should have. >> if you know it's a safety risk and have an easy way to fiske the problem, why wouldn't you do it on all cars. >> the nationaligh traffic safety administration required an alarm, not an automatic shutoff. nhtsa says it will issue a final rule in february. they are suing ford, the maker of lincoln cars. ford says the system has prison

to be safe and reliable. they add many current models with keyless ignition do have the automatic shutoff feature. >> this was a senseless accident. >> reporter: alex perez, abc news, chicago. >> so sad to hear that. by the way, alex tells us an estimated 5 million keyless vehicles do not have that automatic shutoff system. there are a lot of carses out there that don't have it. >> a good warning to check your detectors at home. >> absolutely. coming up, a popular test book accused of rewriting history. >> and why they decided to use a term worker over slave. you're watching "world news now." "world news now"

a major manufacturer of high school text books is being called out for softening language related to america's history of slavery. >> one student showed the book to his mother who happens to be an educator herself. and through the power of social media, the book is now being rewritten. deborah wrigley of our houston station with the story. >> reporter: it's a new geography textbook. last week kobe by was about to read chapter five when he came across this is reference to early immigration to the u.s. >> it had africans africans and

africans americans as workers implying pay as if we had come here willingly and were paid to do our jobs. >> reporter: his response a text picture to his mom. with a sarcastic comment saying we were real hard workers weren't we? >> message received. >> it was a little troubling. >> reporter: she did messaging of her own on facebook posting a video what the book did and didn't include. >> there is no mention of africans working as slaves or being slaves. >> reporter: it's been shared across the country and got the attention of the publisher mcgraw-hill which announced friday it would revamp references in the textbook's digital version to state african slaves arrived as a forced migration and worked as slave labor, a step but not adequate for ronnie. >> many schools don't use the digital version. we know this book is going to sit in schools for eight to ten

years. >> reporter: she speaks with authority because she's a former teacher herself and is now a p.h.d. candidate specializing in education curriculum and should the state need someone with her experience to vet school test books, she says she would relish the chance. all of these stories i'm wonder how they're being told outside of world geography. this is the first step in high school history. what's the u.s. history book look like? >> she makes some interesting points. i hope they take her up on the fact she's willing to review these books. >> i hope they do. the printed version is now in some 267 districts that are already using it. that was deborah wrigley from our houston station. what a smart kid to be able to realize that mistake. >> and to catch it. >> yes, and talk to his mom about it. coming up, lack of sleep and your health. >> the new study about weight gain and your bedtime. we wouldn't know anything about that in the overnight.

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dare to feel more with new k-y love. donald trump may be leading in the polls but this guy is right on his heels and today, ben carson faces the women of the view". ♪ okay. it's a sore subject around here. many of you can certainly relate when it comes to your overall health, lack of sleep can be a problem. >> and for young adults, especially a late bedtime can having serious consequences. >> reporter: it's something all teens love. staying up late.

a new study from uc berkeley finds if your teen goes to bed late, they are at a higher risk of gaining weight. >> this is the first study of its kind to look at the relationship bween bedtimes and weight gain above and beyond sleep duration. so you're more likely to gain weight going to bed at 2:00 a.m. than p.m. regardless of how much sleep you're getting. >> reporter: more than 3,000 people were studied and over 60% of young adults between the ages of 18 and 24 went to bed past 11:00 p.m. >> that late bedtime was associated with an increase in weight gain that was that corresponds to 2.1 unit increases in body mass index over that developmental period. >> reporter: so what exactly does that mean? on average a 5'5" female teen who weighs 132 pounds and goes to bed late from adolescent to adulthood will gain approximately 12 pounds. at 11 or 12:00 at night, you're not likely to reach for a salad

or apple. you're more likely to reach for pizza, hot dogs or hamburgers. that over time to lead to increased weight gain. >> apparently. >> so depressing. > isn't? i remember high school. i got five hours of sleep a night. i had a lot of the homework. i was a nerd. >> nowadays you're catching up on your sleep. >> when? when would that be? >> oh. >> even you have problems when you're flying. > are those tidy -- >> you tell me. >> what is he wearing? this is one of the selfies you took. >> this is on the acela. >> is that you in the back. >> with the blonde hair wondering why you're taking a picture of naked man? >> that is great. >> that's the news for this half hour. >> remember to follow us on facebook wnnfans.com.

\s this morning on "world news now," remarkable rescues in the disaster zone. >> the epic floods in the carolinas, the worse nick human toll, the cars swept away and the property damaged. knew details about the monster storm and the relief coming in. playing dead to survive. that's the chilling account from an oregon college student who was shot in the back. what she remembers about the gunman. >> caught on camera, the high school football coach and a referee expressing their disagreement in a most physical way. what caused tempers to flare. and later pizza with something extra. the ingredients suitable for the season added to make this a pumpkin pie. the gourmet creation in our kitchen on this tuesday, october 6th. from abc news, ts