begin with the m. mass. mass. and the nucleon will have more energy which is to say, equals-- which was easy to say will have more mass outside the nucleus than inside. and in there lies the secret of nuclear energy because the graph of the nucleons would be something like this. over here 92, there's the graph that really, really tells it. and it's a graph, mass per nucleon versus atomic. now, it's not the mass of the whole atom, mass of the whole nucleus, it's the mass of each nucleon in the nucleus. and you say, in hydrogen it has the most mass of all. none of its mass is bound up with energy or binding anything else with it, it's all by itself. and as you continue to go up the periodic table, you get varying amounts of mass per nucleon. the point is, how much mass you got? depends per nucleon, depends what nucleus you're in. let's look at the uranium fission in terms of this relationship. here's uranium right here. the uranium atom has nucleons which have about this much mass each, each, all right? what's gonna

it finds the body mass index... or b-m-i for short...sgnificantly underestiiates the number of people who re obeseeressarchers say booy fat is more accurate... because ittdifferentiates fft, some of your co-workers might be wearing sneakers today. report them to the fashion police, joel d. mith is livv at lake montebeelo to show us why thoosands are expected to good morninggjoel d. 3 3 3 a warring?or propaganda? propaganda? it existt in severaa different languages and it's been a concern of ours for a while." york... concerning al-qaeda.... that hhs some people up in arms! arms! ((break 1)) ((addllb meteorologist)) 3 ((traffic reporter ad libs)) &p3 p3 ad libs))((traffic reporter ((traffic reporter ad libb)) pap 95 t 695 map fiber map bel air map 3 3 3 3&apple is breaking aal kindd o. &precords.the newess one the teehonology giant is n the verge of breakingg. that's making history. history.and it's sort o in beforeand terror plots discovered?what these posters have some people in new york thinking...and if a real threat looms. ((bumm out

people are categorized as overweight or obese based on body mass index, or b-m-i..ight to weight. but a new study suggests b-m-i may lead us to *underestimate* obesity.. because it often misrepresents physical fitness and overall health. someone with a normal b-m-i could have very little muscle and mostly body fat.. and would have a lot of health risks because of that. the researchers recommend lowering the b-m-i threshold for obesity from 30 to 24 for women, and to 28 for men. mammograms may *overdiagnose* up to one in four breast cancers. harvard researchers and scientists from norway and sweden analyzed medical records from nearly 40 thousand women to compare the incidence of invasive breast cancer.. with and without screening. the study found that 15 to 25 percent of the invasive breast cancers detected by mammography would never have turned life threatening. the researchers say, screening afforded women only a slightly smaller risk of dying from breast cancer.. and did not appear to reduce the total number of deaths from any cause. many preschoolers are not get

as much as that's possible for a mom bringing s&m to the masses. have they read the book? >> no. >> reporter: how would you feel about that? >> embarrassing. >> reporter: after the whirlwind she went through, there is something she is ready for. after this kind of success, what's next for you? >> i want to lie down in a small, dark room for some time. or a beach with a large cocktail in my hand. >> okay. that research. erica says she did visit one sex shop to look at all of the devices that are featured in the book. she did most of her research on the internet. also, with personal research with her husband. who had the attitude of what? again? >> wow. >> i tweeted out, who would you pick to play christian and anna? >> i can't stop thinking about that. >> we got hundreds and hundreds of responses. my favorites that i heard were henry cavel. and the young actress, from "the descendants," as anna. >> we shall see when it comes to the big screen. >> absolutely. >> you can see more of elizabeth's interview on "20/20" this friday. >> great job. george, t

. >> reporter: investigators continue to search for the weapon used in a mass shooting m an oakland universityarning new details about the alleged gunman. >>> welcome back. i'm tori campbell. >> i'm dave clark. >>> it's wednesday, it's april 4th. >>> well, later today, the man accused of killing seven people at a oakland university is due in court for the first time this afternoon. take a look at this. this is 43-year-old one goh. tara moriarty is at the oakland its chew airy to tell us what we now know -- estuary to tell us what we know about the suspect and about the weapon used. >> reporter: well, investigators say goh told them when he finished his killing spree, he came here. if you look across the area, you can we're knot too far from the business park where oikos university is located. now the challenge is to find the gun. it is zero visibility. searchers are literally scrounging around in the mud with their hands trying to feel for the .45 caliber gunman. investigators say he was trying to exact revenge. >> he was upset at the administrate for being expelled for behavioral problems. ma

mass violence. as long as it's deemed unsafe to put inmates together, pelican bay will replamain one of the m violentlyd prisons in america. for msnbc, i'm forest sawyer. . it feeds plants and prevents weeds for up to three months. so my plants grow bigger, more beautiful, without all the weeds. guaranteed. [ cellphone rings ] with miracle-gro shake 'n feed, anyone can have a green thumb. [ cellphone rings ] everyone grows with miracle-gro. [ slap! slap! ] [ male announcer ] your favorite foods fighting you? fight back fast with tums. calcium rich tums goes to work in seconds. nothing works faster. ♪ tum tum tum tum tums >>> hello. one person is dead after sudden strong winds topple a beer tent in st. louis, missouri. 20 people went to the hospital for treatment.

m in norway, tens of thousands of people turned out to sing a children's song in protest against a massiller, anders breivik. he said he hated the solid "children of the rainbow," claiming that it was marxist propaganda. he admits massacring 77 people in oslo. he is currently on trial in norway. and synchronized suicide bombings have killed at least six people in the nigerian capital and a northern city. they targeted officers of a newspaper. no one has claimed responsibility. well, there are lots of uncertainties leading up to the presidential poll in egypt, but what is now cleared the last prime minister under hosni mubarak will be running for the top job. >> it is expected to be a tight race, and many voters are undecided. the world will also be watching to see whether the egyptian uprising has brought about change. >> the head of egypt's electoral commission with the list of 13 candidates cleared to run in the presidential poll. among them, the last prime minister under hosni mubarak. only two days ago, he had been barred from standing. he is seen as one of the top contenders for ne

mass layoff. what he says about the future of the company and why a new study says even a false positive on a owe for m may concern. [ older brother ] hey, that's the last crescent. [ younger brother ] oh, do you want it? yeah. ok, we'll split it. [ female announcer ] made fresh, so light... ...buttery and flaky... this is half. that is not half. guys i have more. [ female announcer ] do you have enough crescents? and these are the ones you'll love as dinner. grands! mini pizzas. grands! biscuit dough... plus 3 ingredients make an easy dinner everyone loves. grands! mini pizzas... from pillsbury. >>> we are following breaking news out of virginia city, virginia where an fa-18 assigned to the oceania naval station has crashed into an apartment complex. you are looking at live chopper pictures of the scene where the plane went down. it appears to have crashed into or at least right next to an apartment complex, severely damaging at least three or four of the buildings there. still no word on any injuries on the ground. now, that in spite of all that damage you're seeing. the two-member crew of the navy j

administration's claims about weapons of mass destruction in iraq then they gave just one group of people evidence proving that the bush administration was lying about the w m d questions here's what the scientists found out when told about the bush claims of w m d's thirty four percent of conservatives believed iraq had nukes but in the second group which had heard the refuting evidence the proof that it was a lie the number of people who believed the lie actually jumped up to sixty four percent of conservatives who believe that iraq had w m d's basically the live became more effective when it was debunked scientists call this the backfire effect and they noticed the same results when they gave conservatives claims from the bush administration. it tax cuts for the rich will increase government revenue the number of people believing bush nearly doubled when they also heard evidence from real economists refuting bush's arguments that tax cuts increase revenue the washington post sums up the conclusions of the experiments writing republicans might be especially prone to backfire effect because conservatives may have more rigid views than liberals upon hearing

m 16 also he was wearing a smoke, a gas mask. surveillance cameras were set up inside a visit the apartment. this ended in mass of flames. is not clear how this ended but the died ultimately of myself infected himself-test of a self-inflected gun wound. this is the tragic loss that happened. robert terracrobber -s officer's life was perished. >> take a look at this >>kimberlee: police say this man stole an suv and led a police chase of three different counties in kentucky. he stroked a police car and watch. this continues when the officer had to drag the dock and the suspect out. the dog to not want to let go. and a eventually, check this out. a powerful 27 magnitude -- 2.7 magnitude earthquake in the country of chile. it was near the coast but nearly 70 mi. away causing mudslides. let us take a look it this next video. spectacular images of a solar flare charged particles and superheated plasma were shot millions of miles into space. no danger posed to the planet earth. >> this anti-gay group targeting urban outfitters. this is their latest advertisement. there were threatening to boycott j.c. penney after allen and the

m-- for short... significantly uuderestiiates significhe number of people who measuring the percentage of body fat is more accurate... because it ddfferentiates fat, muscle massne. heart disease remains the number one cauue o death in our country, but the says 800percent of hose ion deaths... are preventable.. thousands oo people are taking steps towards a heelthier life, by "taking a fewwmoreesteps" today. joel d. smith s live at lake montebello now with some more reassns yoo should join "national walking day" d. if you're going to ake part in national walking day.... maae sure you don't text while &pyou do it!thii "texting lane" in philadelphia shows just how hard it is to watch where you're goinggwwen you're texting.this mmn s having a lane.the lane sttrted as an e stay up for a week to raise awarrnnss of the dangers. coming up... a somber day... in our nation's history.today marks assassination of martin luther king, junior.what the city of memphis ii now doingg.. to pay you're watching fox 45 morning news.. all locall. all morning. ((break 5)) ((ad libb , wtÑpfafag?o4/@  3 ,3 3 3 3 coming up... paying trrbute... to a civvi rights leaddr.what the city of