precipitation. >> all right. very good. thanks glenn. for all of us here at "nbc10 news" thanks for watching. >> we continue now with "nbc nightly news." on our broadcast tonight, is it a turning point as isis finds a new way to shock the world with the execution of a jordanian air force pilot. jordan vows revenge, and tonight what we're learning about the american woman being held. the vaccine debate despite a mountain of evidence that they're safe and save millions of lives. the reason so many parents are choosing not to vaccinate their children. three parent babies the world watches a pivotal decision of the in vitro fertilization. some fear a world of designer babies. the surprise sequel to the american classic "to kill a mocking bird." turns out the reclusive harper lee wrote another novel, and much to the excitement of

readers everywhere. "nightly news" begins now. >> announcer: from nbc news world headquarters in new york, this is "nbc nightly news" with brian williams. good evening. the terrorist group isis so determined to shock civilized people everywhere has now resorted to a new method of murder. they have executed a jordanian air force pilot by burning him alive and we'll point out just as quickly here we're not going to air a bit of that here tonight. this execution while no more vial than any of the others may be different in terms of how jordan now reacts to the murder of a pilot and a muslim and in the background here is the knowledge that an american woman is also being held by the same group. we have it covered tonight beginning with richard engel. richard, good evening. >> reporter: good evening, brian. there is absolute outrage in jordan. people are furious. they are shocked. there are calls for military action

action. and there's been a strong show of support for the monarchy. locked in a metal cage, doused in fuel, the young jordanian pilot moments before being burned alive. the most savage act yet from a group known for its shocking brutality. in jordan relatives could not contain their disgust, and grief, and fury. the pilot was first lieutenant muath, 26 just married in july. an elite member of jordanian society. he was captured a day before christmas after ejecting from his f-16. jordan's king abdullah a close u.s. ally at the white house today, before cutting short his washington visit. earlier on jordanian television he called the murder cowardly terror by a group with no relation to islam. president obama said the killing

intensifies his determination to fight isis. >> should this be revealed to be authentic, it is just one more indication of the viciousness, and barity of that organization. >> reporter: jordan had been considering a prisoner swap for the pilot, exchanging him for three militants on death row. including this woman, captured after her suicide vest failed to go off during a 2005 attack on three hotels in amman. 60 people were killed. jond an said last week it would free her, but first wanted proof that its pilot was still alive. in fact jordan believes he may have already been dead burned alive just days after his capture. >> and that woman on death row, jordan said it will execute her and five other militants as early as tomorrow brian. >> richard engel, starting us off tonight. richard, thanks. about this other hostage being held by isis another american

a 26-year-old woman. we haven't heard much about her case publicly until now. as the president has spoken about the situation for the first time. andrea mitchell at the state department in washington for us tonight. andrea good evening. >> good evening, brian. the horrific murder of the jordanian pilot has only intensified the effort to find the last known woman captured by isis. militia and terrorists she went unarmed. hundreds of thousands already dead millions more wounded or displaced. a 26-year-old american woman working for aid organizations, trying to help the war's millions of refugees. taken hostage a year ago august. her name hometown and organization are withheld at her parents' request. but always top of minds at the white house, as the president told savannah guthrie this week. >> we are in very close contact with the family trying to keep

them updated. obviously this is something that is heartbreaking for families. and our obligation is to make sure we can do anything we can to try to make sure that any american citizen is rescued from this situation. >> reporter: but isis has wiped out borders, forcing the u.s. to rely on murky contacts. and often unreliable intelligence services. the only positive sign isis has never acknowledged capturing the aid worker and killing a woman on camera might be offensive. >> there's also reason to believe that they're not intent on killing female hostages. >> in fact isis has never parade the the american woman among the other hostages leading some to hope her faenl to pray that she may still be alive. >> andrea mitchell at the state department for us tonight. andrea thanks. today republican senator rand paul of kentucky went to the physicians office in the u.s. capitol took off his dress

shirt and got a booster vaccination for hepatitis a, and he made sure a camera was there, because he has spent the last news cycle tangled up in the debate over vaccines. yesterday on cnbc he said in part he was aware of many tragic cases of walking, talking, normal children who wound up with profound mental disorders after vaccines. well today the senator, who is an eye doctor said he's annoyed as characterized as somehow anti-vaccine. he said the science is clear and vaccines are safe. this has blown up after the measles outbreak in california which has now spread to 14 states. >> reporter: today employees washed toys outside the california day care where an infant infected with the measles infected 14 other babies. the company ceo said there's

been no impact on park attendance. >> this is the time for kids under inoculation age to be cautious about taking their kids to public places. >> reporter: the growing outbreak seems startling for those who remember before scientists developed a safe vaccine in the early '60s when 48,000 people were hospitalized each year and killed 400 to 500. one victim the daughter of roald dahl. he begged parents to vaccinate, writing of his 8-year-old i feel all sleepy she said. then in 12 hours, she was dead. most younger people nowadays never lived through measles. maybe that's why americans under 30 are less likely to vaccinate their babies. >> i think it's about time someone stood up and had a good example of a child that can't receive a vaccine.

but that needs the community around him to support him. >> reporter: the cdc recommends immunization but it's up to states to create the laws. mississippi, which has the nation's highest vaccination rate almost 100% only lets parents opt out of measles shots for medical reasons, not personal ones. in colorado only 81% of people have been immunized, the lowest in the country. 110 other countries have better vaccination rates than the u.s. on capitol hill meanwhile, a rare show of consensus. >> it's really a slam dunk what the decision should be. >> reporter: for lawmakers and doctors, get the shot to stop the spread. hallley jackson, nbc news los angeles. one more note on this tonight, we're joined by dr. nancy snyderman. i know your view is forget measles. the comebacks could not perhaps stop at measles. >> you and i have sat here for the last few months talking

about whooping cough, mum ms and measles. these outbreaks aren't an accident because we've become rather lax, we forget what these diseases look like and we forget that they kill and that a simple vac sdeen these. we can protect those less vulnerable to society. what concerns me that this may be the canary in the coal mine. we see a break in public health in this country. there is no debate. vaccines save lives. what if a year two years from now, you and i are sitting here talking about the first case of polio in this country. i don't think we can be so cocky to say that can't happen. this should be the call to arms. >> dr. nancy snyderman with a cautionary note hireere. our weather continues to make news as millions are in the grip of a cruel kind of cold clear to the eastern seaboard.

many saw yesterday's highs cut in half still. parts of the northeast which saw a record number of snowfall over the past week have flash frozen leaving the roads an icy treacherous obstacle course. miguel almaguer is in boston for us again tonight. miguel, good evening. >> reporter: today the desperate break from falling snow. but no relief from bone-chilling cold. the arctic blast dropped the windchill to negative 13 degrees in boston. >> hypothermia can turn serious very quickly. >> yes, it can. >> reporter: at mass general they fired up the hypothermia cocoon. >> patients that have burn injury are greater than 20% of their total body surface area will come in here because it provides a lot of heat and it also provides moisture. >> reporter: the deep dive in temperatures felt across the nation. in denver cheyenne kansas city

and rapid city today's highs will plummet in half by tomorrow. across the region a flash freeze. whiteout conditions in southern minnesota triggered back-to-back multi-vehicle pileups. black ice can be deadly. we were shown firsthand how treacherous slick roads can be. if you're not familiar with driving on snow and ice, simple maneuvers can be dangerous. even on a closed course like this one, experts say braking can take 10 to 15 times longer. speed wasn't a factor in boston. record snowfall this week turned today's commute to a crawl. >> we received over 40.1 inches of snow. we're looking at possibly another six inches of snow on thursday. >> reporter: with snow farms at capacity massive melters like this one are being trucked into the city. but tonight back roads are still a mess. on demand plowing is now an app. >> they just click on the app,

request a service, and look out their window and watch us take care of their work for them. >> reporter: brian, this is one of three snow farms in the city of boston. it's completely packed. the city said they can't bring any more snow here. but as we mentioned, they'll get a few more inches on friday. >> miguel thanks. and then there's the west coast. they're about to get a deluge of heavy rain beginning tomorrow. the so-called pineapple express, that flow of atmospheric moisture that stretches out clear from hawaii is expected to deliver an enormous amount of precipitation. california oregon washington part of idaho, montana, could all see several inches of rain from this. with flooding and landslides a possibility. possible proof of life tonight from cuba. after months outside of the public eye, fidel castro wants the world to know despite endless rumors to the contrary he is very much alive. new photography emerged today

showing the 88-year-old former cube an leader the first time we've seen anything of him since august of last year. still ahead for us this evening, so-called three-parent babies. a closely watched decision today, what was once the stuff of science fiction, now very much a reality. and not everyone welcomes it. in a day and age where it's tough to shock people anymore, a huge surprise today that no one saw coming. how much money do you have in your pocket right now? i have $40 $21. could something that small make an impact on something as big as your retirement? i don't think so. well if you start putting that towards your retirement every week and let it grow over time, for twenty to thirty years that retirement challenge might not seem so big after all. ♪ ♪ [announcer:] what if one stalk of broccoli could protect you from cancer?

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it bends the mind as well as the established laws of nature one baby with three genetic parents, and while some call it playing god, those who support this in vitro technique say it can greatly increase the chance of having a healthy baby. it is not legal yet in any country, but it may come to the uk first. nbc's katy tur reports from london tonight on how it works and why parents might want it. >> reporter: at first glance little jessica holliday looks like any healthy, happy baby. you'll find the 13-month-old struggles to swallow and hold her head up. jessica has a genetic disease that will prevent her from every walking or talking. and there is no cure. >> when you're told that your daughter's going to die, it's really hard to take. and then for them to say, oh by the way, any more children that you have would also have the disease. it leaves you with no hope for the future. >> reporter: but today uk

lawmakers took the first step to give parents like the hollidays back that hope. while entering a brave new world of genetic science. >> so the eyes have it. >> reporter: moving through so-called three-parent babies to elem nate certain genetic mitochondrial diseases. mitochondria are the power source. when they're defective they don't fuel development. they combine the mitochondria of a third party. the third parent involved is only giving their healthy might oh con tri a, which has no identifying characteristics? >> that would be correct. >> reporter: it may seem like a small step beyond in vitro fertilization, but experts say it is a big step in our ability to manipulate life. >> today's step means we can take diseases 100% lethal and alter the course so a husband and wife can have a healthy baby. >> reporter: detractors say this

new step is a slippery slope that could lead to genetically customized designer babies. but for parents like vicky holliday -- >> there's no words. it's absolutely incredible. >> reporter: -- it's a new chance for a healthy child. katy tur, nbc news london. we're back in a moment for news. for anyone who works out, coming to one particular exercise, it turns out less it more. there's nothing more romantic than a spontaneous moment. so why pause to take a pill? and why stop what you're doing to find a bathroom? with cialis for daily use, you don't have to plan around either. it's the only daily tablet approved to treat erectile dysfunction so you can be ready anytime the moment is right. plus cialis treats the frustrating urinary symptoms of bph, like needing to go frequently, day or night. tell your doctor about all your medical conditions and medicines, and ask if your heart is healthy enough for sex. do not take cialis if you take nitrates for chest pain as it may cause an unsafe drop in blood pressure.

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veronica and i are trying a new fad called jogging. apparently you just run. >> it was indeed once rare to know a jogger but then it became widespread exercise. now the journal of the american college of cardiology says too much jogging could be as bad for you as not jogging at all. they found moderate jogging in

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fact. fast-acting advil is designed with an ultra-thin coating and fast absorbing advil ion core technology stopping headaches and other tough pain. fast. relief doesn't get any better than this. advil. the great american novelist harper lee gave us a great american book "to kill a mocking bird," and then she disappeared. she gave her last wide-ranging interview when jfk was president. she lived in relative seclusion ever since. reportedly now in fragile health at the age of 88. all the while and for all these years, book lovers and publishers alike wanted more. maybe just one more book and

soon we're going to get it. because it turns out harper lee wrote another novel. a manuscript that everyone thought was lost including the author herself. we get the story tonight from our national correspondent, kate snow. >> one book the last few years, has been so warmly embraced -- >> reporter: for decades, a must-read, in the oscar-winning film. >> you consider things from his point of view. >> reporter: "to kill a mocking bird" was harper lee's only book. now her publisher said they recently discovered another work. >> we devoured it. >> reporter: it's not a new book but essentially a first draft written in the 1950s of what would become "to kill a mocking bird." >> it was submitted to her pub liber in 1957 and she was told to rewrite the book from the point of the young scout. >> reporter: scout is a grown

woman, back from new york to visit her aging father in alabama. author and filmmaker mary mcdonough murphy said the 304-page manuscript was discovered in a bank safe deposit box. >> in cleaning out the deposit box, lo and behold here is this manuscript attached to the original manuscript "to kill a mocking bird." >> how do we know this is real? >> you can see it's written on a manual typewriter from the period. it has on the front of it the address where harper lee was living at the time in new york. if you read the book more importantly, only harper lee could have written this novel. >> reporter: in a statement, lee said she passed the manuscript around to trusted friends to make sure it was worthy of publishing. writing, i am humbled and amazed that this will be published after all these years. >> it came out of the blue a bolt out of the blue. and we never heard from her again. so this is really exciting. >> reporter: for a new generation of readers, a new

ending to an iconic american story. kate snow nbc news new york. that is our broadcast on this tuesday night. thank you for being here with us. i'm brian williams. we of course hope to see you right back here tomorrow evening. good night. a secret drug stash at bobbi kristinas? the shocking new discovery and the bad boy mystery man inside her house. >> now, on "extra." >> was bobbi kristina high on drugs when she nearly drowned.

>> new details as whitney's daughter fights for her life. >> why cops were called to the home just over a week ago. new questions about this man, with a history of drug arrests. plus family brawl at bobbi's hospital bedside. >> bruce jenner's mom confirming he's becoming a woman. >> and who just landed the first tv interview with bruce. new video, patriots star rob gronkowski's wild night out, partying in hollywood. plus giselle's new confession about falling for tom brady. new mom, mila kunis snapped back into shape and opening up about parenthood with ashton. >> that ban man was born dad. then mario's poolside with the oscar class of 2015. >> reese i've got to say first of all apologize. >> what? >> what did you do? supply plus, the beauty queen who tore the tiara off her competition. now on "extra," from universal