let's get more on this story now we have derek williams from give you science with us hi derek tell us who these 3 scientists are and why they want these 3 researchers back in the 1990 s. looked into the genetic reasons for for how cells react to the availability of oxygen now every organism on earth needs oxygen we need them for fundamental metabolic processes and actually an earlier recipient of this prize back in the 1930 s. won the prize for describing the process of how of how that works how suit is turned with the help of oxygen into energy but the question of availability and how the cells within the body react to availability of of oxygen that was something that was happening at a genetic level that nobody really quite understood and so this work is really about that fundamental process how does the cell know there's not enough oxygen there or i have enough oxygen in order to do a whole wide range of things including things for example an exercise to provide enough oxygen to the muscles at the right time in order to get the energy to the muscle ok so very important work was it

dissect all of that for the unscientific of us like me is derrick williams from our scientific desk derek tell us a bit more about these batteries well the trees are a fairly simple idea they've been they've been around in one form or another since the 1900 centuries you have a positive everybody knows to more or less how they work you have a positive pole and you have a negative pole and you connect those 2 with the bridge and electrons flow from the positive pole to the negative old voila you have electricity now the thing about lithium what special about lithium is that it's a particular material that is both able to give up an electron very easily and it's happy to accept one back and so it's kind of the perfect material to use in a battery that where you want to charge and recharge over and over again it can flip back from one state to the other fairly easily however it's also highly reactive element and so basically what this work did was it made it safe to be used in things like cell phones that sounds very useful how useful are they in our everyday lives in the wireless 21st century is

all of that for the unscientific of us like me is derrick williams from our science stick desk derek tell us a bit more about these batteries well batteries are a fairly simple idea they've been they've been around in one form or another since the 1900 centuries you have a positive everybody knows time to more or less how they work you have a positive pole and you have a negative pole and you connect those 2 with the bridge and electrons flow from the positive pole to the negative pole voila you have electricity now the thing about lithium what special about lithium is that it's a particular material that is both able to give up an electron very easily and it's happy to accept one back and so it's kind of the perfect material to use in a battery bed where you want to charge and recharge over and over again it can flip back from one state to the other fairly easily however it's also highly reactive element and so basically what this work did was it made it safe to be used in things like cell phones that sounds very useful how useful are they in our everyday lives i mean the wireless 21st c

did derek tell you that he was dating crystal taylor? >> no. r before he was actually arrested in 2011. >> did derek ever mention he had gotten a girl pregnant and was concerned about that? >> no, he didn't tell me about that. >> reporter: and he was adamant there's no way her brother hung out with a gang banger. skyler moore, aka c-styles. ever meet him? >> no. >> ever hear derek talk about him? >> never hear derek talk about him. >> derek friends with any gang members? >> my parents are extremely traditional. they weren't into gang violence or any of that nonsense. derek would not bring gang members to the house or affiliate himself with gang members. furthermore, no one's seen derek ever, ever, with any gang member. >> reporter: danielle said her brother had nothing to do with crystal's murder and that c-styles was a liar. >> he is known as a jailhouse snitch, and he is harassed and beaten up by people where he's currently housed at. the deal for him is that he gets relocated out of state to a place where nobody knows him. >> reporter: she sa

that used to be friends of the tories saying it's been sold out can you just briefly tell us derek what exactly is the agreement now on ireland is it workable and is it going to be acceptable in the end if there's a compromise on both sides a northern ireland in future will be sort of in between the e.u. and the u.k. it will be officially part legally part of the u.k. customs union so if you k. does deals with the us it can profit from that but there's a back door and up back door we'll keep the border between northern ireland and the republic which is staying in the open so basically if you were to be positive about it they have the best of all possible worlds even membership on officially pragmatically on a day to day basis travelling over and back across their open border but they also have access. to these wonderful new global britain trade deals the london will be agreeing so they got the best of pos words boats the people in northern onto are loyal to the queen they don't want to be they don't want special treatment they just want to be as good you u.k. citizens anyone else and th

party that used to be friends of the tories saying it's been sold out can you just briefly tell us derek what exactly is the agreement now on ireland is it workable and is it going to be acceptable in the end if there's a compromise on both sides a northern ireland in future will be sort of in between the e.u. and the u.k. it will be officially part legally part of the u.k. customs union so if you k. does deals with the us it can profit from that but there's a back door enough back door we'll keep the border between northern ireland and the republic which is staying in the open so basically if you want to be positive about it they have the best of all possible worlds even membership on officially pragmatically on. on a day to day basis traveling over and back across their open border but they also have access to these wonderful new global britain trade deals of london will be agreeing so they got the best of all possible worlds but the people in northern onto a lot of the queen they don't want to be they don't want special treatment they just want to be as good you know u.k. citizens any

. >> derek is here to tell us about it and when it's going to end. >> yes, just another chapter in the, the book we're currently writing. peer fo we're focusing on the broader picture. interesting angle from copernicus. they is founded that 2019 has tied 2016's september as the average hottest temperature in that month ever recorded. pay attention to the reds in the extreme northern portions of the northern hemisphere in the arctic circle. it has been extremely hot. this is following a disturbing trend that we continually talk about at cnn weather because it is a hot topic, no pun intended. join was the hottest june on record. july was the hottest month ever recorded. i mean, this is incredible. august was the second warmest august ever recorded on planet earth. so, this is having major impacts on not only the air temperature and the air that we breathe but also the oceans. now, this is coming in the form of melting sally icea ice. so warming ocean, it takes up more volume. we call that thermal expansion. let me take you on the lines of thermal explosion. this is actually an archipelag

thank you very much >> it's great to have you here nancy, fascinating discussion with derek and michelle there. tell me as an investor what you're going to do about this. >> yeah, i mean you're going to rethink the model i think from here but i also, we're not investing short-term on china tweets or trade innuendo >> but is it harder if you're invest ng the long-term because what are you trying to factor in for those china numbers? >> i think we're going to see supply chains move slowly. i think there's going to be change at a glabl speed, but i think it changes the framework i agree with michelle. i think she's been right on this issue all the way through. our relationship is changed with china and i think that's a good thing. >> in terms of the u.s. interest, but so many different megacompanies like anybody you look at and have to figure out what's their exposure going to be in china, how big a presence are they going to have there how do you make that tacalculation? >> we're setting parameters lower on earnings. we still like the company baseded on cash flow and those earnings, we're comfortable

. >> derek van dam is here to tell us about when there may be relief in sight. >> 91 days this summerf temperatures in 90 degrees here in atlanta. >> i believe it. >> we feel it. >> our topic today is the broader picture. it's more of a worrying trend. it's more of another chapter here within the world's climate story that we continue to talk about. cpernicus, this is a european climate sensing program that has actually just come out with information that september 2019 tied 2016's warmest september on record. we're seeing this off of back to back to back months off of warmest temperatures. june was the warmest june on record. july was the hottest month ever recorded on planet earth. august was the second warmest august on record. this is having far reaching ramifications, especially on our rising seas. with a warmer planet, we have warmer oceans. we are melting our sea ice rapidly. when that happens, the warmer water takes up more volume. let's me take you to norway. this is the northern most inhabitable region of the planet. it's in the arctic circle, way up there just south of the

derek williams from a d. w. science welcome a derrick from the report they have a stiff does sound very interesting tell us more about what caitlin radcliffe and samantha have done well these 3 researchers back in the 1990 s. looked at that 1st of all oxygen is fundamental to life everybody knows that we need oxygen in order as we just heard to convert food into energy and every organism needs energy so we've known that for a very very long time in fact an earlier nobel prize laureates received it in the thirty's for describing that process of oxygen helps turn food into energy what we didn't know is how cells respond to the availability of oxygen because oxygen is available at different levels all the time depending on whether for example you're exercising or if you're sleeping your cells receive different levels of oxygen all the time so these fundamental processes of how the cell knows what it needs to do at a particular time because it has a certain amount of oxygen available that was very complicated and these 3 researchers figured out the processes at a genetic level that are actually ongoing in the cell

derek. will he win? >> if i knew that, i would be sitting with bookmakers. people in ireland are watching close. this is the final showdown of all showdowns. as falls -- far as i can tellit is looking very tight. the last numbers i heard is through 21 against and 380 in favor -- 321 against 10 380 in favor -- 321 against and 380 in favor. he has been sure before and even more short now. >> people are fed up with brexit. they just want to get on w with it. listen to labour party opposition ronnie campbell. >> [inaudible] the bill has been put in front in even the queen was involved. the supreme court, everybody should be involved in stopping parliament from doing its work. might not be the best deal, but it is a deal and we are leaving europe and that is the main thing. phil: this is the weird thing about how brexit has split the politics. the labour party line is to oppose this deal. there are people who are persuadable as far as mr. johnson is concerned. >> i know from cousins and relatives in britain, you t thik four shots get enough to c come across and a lost 10 people that have pulled out in the last minute, so the more, the better. he just needs to pull in votes

: steelworker derek tate was buried under the rubble on the eighth floor until rescue teams dug him out. >> i could have been left there. i wouldn't be able to -- i wouldn't be here telling this story today. >> reporter: crews are now in a race against time and will use explosives to bring down two cranes that are precariously leaning over the site, which is managed by citadel builders. a spokesman for the company tells nbc news it has not been able to verify this video, adding, we cannot overstress that while we await the implementation of the plan to secure the site, one thing that can be just as dangerous as the tower cranes is false information. >> somebody needs to be held accountable for it. >> reporter: tonight derek tate is out of surgery but still in shock. gabe gutierrez, nbc news. >>> up next for us, what an alarming new study found in baby food and how you can protect your kids. >>> now to a story every parent with an infant should hear a new report finds a staggering amount of baby food may contain toxins that could negatively impact your baby's development abc's blayne alexander with the alarming details >> reporter: toxic chemicals damaging to baby brains

gavin, jeffrey curtis, ryan, derek dulat, marshall luke, conner perot, ryder clancher, egan prather, reese roselle, bolton shorts, pagan spagdoni, and stan wiltse. boy, i tell you what. [applause] congratulations. i just said, does anyone want to say something? they said, no, no, no. but you and i know they don't choke. you don't know what the word "choke" means, right? >> thank you. >> congratulations. >> thank you all for the support. >> so, where's this big pitcher like 6'2" and 75? i want to represent this guy. somebody's going to make a lot of money representing him. he weighs 350 pounds and can't get out of his seat. are you ready for the major leagues some day? what do you throw? 72, 75. did you do pretty well? he kept them pretty well shut out, they couldn't see the ball, right? and what did you -- in the last score, what was the score? 8-0, right? 8-0, so you didn't pitch a bad game. [applause] thanks, fellas. >> thank you. >> i don't think they want to leave. go right back -- thank you, kids. thank you, fellas. champions, there's no choke. they don't choke. and we don't choke. we don't like chokers. with the help of everyone here tonight, america'

tell what happened to that fire. they plan to cut electricity to as many as 850,000 people to prevent new fires. meteorologist derek van dam is here with us now. the issue, derek, is what are the winds going to do? what's going to happen over the next few hours? >> we're in a bit of a lull. we're not talking about hurricane force gusts right now but we do have the potential to see the strongest wind event of the fire season right into this weekend, saturday night and into sunday morning. something we're monitoring very closely. by the way, if they cut off power to 850,000 customers, that's roughly 2 million people that will go in the dark in california through the course of this weekend. here's the reason why. here's one of the utility polls they were referencing just a moment ago. you'll see the shot in just a moment, but some of the flames being fueled just at the base of the utility poll. they want to prevent high voltage electricity current coming through and sparking additional fires. when wind rips through the canyons, if the polls are active it can spark a fire. here's the kinkaide fire. they have issued in