so. now i have in moscow the critical situation. in the spike in radiation levels in still a withdrawal one from the stricken fukushima. while the japanese government insists there's no immediate danger of all track record of telling the truth about nuclear problems means that not everyone is convinced it's. so huge it runs nuclear concerns the whole asia pacific region on alert with

a sense of the world out there from each side of the good smog in years to come. and did all the news government forces in libya are really taking ever more from the rebels. i guess if anything in their lives day up all the country the u.n. is still set for the scouts. last conditions were acid in japan with big questions about the future of nuclear power we spoke to nuclear physicist wolf than who shared his thoughts on what we can learn from what and how coming in asia. today i'm talking to walt patterson who is an associate fellow at chatham house or fellow of a book on the power industry called keeping the lights on our paths and thank you very much for talking to our tape now the situation in japan is recent several explosions at fukushima nuclear power plant what do you think the chances are that

we may see more and the situation carrying on sure that the people working on the site hope that they've got it under control but they seem to be releasing an awful lot of hydrogen from at least three reactors and now from a fuel point as well and hydrogen is an explosive gas if it's confined mixed with air that produces it can produce very dramatic explosions as we've seen so that's clearly a major concern for them but i think the explosion problem is almost the least of their problems at the moment because what it has done to the reactors we don't know we don't know who hasn't apparently damaged the containment or the reactor pressure vessels themselves although i gather there may be a hole in one of the containments in unit two but what bothers me and i haven't heard any very good confirmation about it is what it is done to the actual

contact between the control room and the reactor itself whether the whether the dials and gauges in the control room are now actually giving reliable information about what's happening inside the reactors particularly because the sensors for temperature and pressure and water level and so on in the turbulent conditions that have been happening in those reactors must be the sensors must themselves now be potentially unreliable which means that the engineers in the control room don't actually know what's going on in the reactors and what could be going on in those reactors in yours. one problem is that they may have water levels rising and falling they may have fuel exposure and we know that they have had fuel exposed which has produced the reaction the reaction between the molten metal cladding and the water it produces the hydrogen so they've certainly had some fuel damage they may well have fuel ceramic fuel pellets that are now also circulating through the

core and that will be clogging up channels and generally generally changing the configuration the geometry in the core and unless the reaction unless the reactor engineers know what is going on they're liable to do something wrong they're liable to do the wrong thing that's what happened at the accident at three mile island in the united states that engine engineers who thought they were doing the right thing to protect the protect the core. open valves when they should have closed them and vice versa and one up exposing the core and causing a major meltdown and you've mentioned that they get rainy and rugs and reacts in under tail at the same away space and we know that they were exposed certainly for a period of time how dangerous is that well the. fuel fuel elements when they're running in the reactor with the chain reaction running the the build up of radioactive waste in the fuel rods themselves gradually accumulates quite a sizeable infantry of very hot radioactive waste and when you talk about the

reactors or shutting down at the time of the earthquake which means that they shut down the chain reaction but you cannot shut down the radioactive waste and anything up to ten percent of the heat in the reactor core when it's when it's when it's running comes from the radioactive waste not from the chain reaction you can't shut down the heat from the waste and that he means that you have to keep taking the heat away or the temperature of the fuel rods goes up very fast and what has happened in i think all three units now is that the fuel has been at least partly exposed such that it then allows its own temperature to go up until the level cubes melt and the metal cubes melt and the little fuel pellets sort are just like little sweeties fall and fall down the uranium fall falls down into the water and of course the problem that produces is that if enough of them fall together they can

start up a chain reaction again and despite all this and what you're talking about is sort of self-perpetuating scenario the government in japan keep saying the safety of the five thousand people to worry about do you think that telling the whole chain i'm not sure they know the whole truth that's part of the problem i mean in the circumstance it would be bad enough if it were normal times but this is after an earthquake an enormous tsunami and the communication channels and the normal organization even of a society. as organized as japan has taken a terrible hit so the fact that they are now faced with a problem like the nuclear problem or they already have more on their hands than anybody could possibly imagine with the with the earthquake and the aftermath of that so many that if it's brutally brutally difficult for the for the vote for the government and for the people of egypt and the rest of the world we always say that pat has a reputation as one of the well face technologically advanced countries and yet they've been struggling to hold these react without for days now what are the

factors that play that to think well i think one of the factors is that precisely the fact that the that this is a nuclear power is a very very complicated technology and its track record of actually dealing with some of the implications of the of the the inherent the inherent characteristics of this or this type of reactor is not good i found the last night an article that i wrote nearly forty years ago describing an intense controversy in the united. emergency cooling systems on water cooled reactors and the performance was criticized by independent experts in the us put the then nuclear establishment the us atomic energy commission we've the concerns aside and this was at the time when fukushima one was being built. and the same the same problem is inherent in this kind of

reactor the only kind of reactor that anybody is building now anywhere in the world these reactors were originally built as power plants for submarines and obviously the overall overriding design criterion is that it has to be compact enough to fit inside the whole of a submarine that means that it has to produce an enormous amount of heat in a very small war you. and the only way that you can do that is with very very high pressure water which means in terms of the walls of the reactor the boiler the reactor pressure vessel have to be twenty centimeters thick and this poses all kinds of safety problems if there is any possibility of the pressure being lost or even worse if the pressure vessel itself when it happened to be breached and these are the problems that these the engineers are now trying to cope with in japan from commentated objects that are saying that this is starting to look

a lot like chinalco what do you think found out i hope that we are still going to be a long way short of a normal here particularly for one reason but even if there were a major release of radioactivity from one or more of the reactors the events which are not always accompanied by an enormous fire which produced a huge plume of hot air carrying radioactivity right up into the stratosphere and that radioactivity was then carried all over the planet by stratospheric winds i think but i can't think of a mechanism that would distribute radioactivity on that kind of scale from anything that could possibly happen in fukushima but we have heard that they have already had some fires including a fire in a fuel point which the cooling apparently failed and any kind of any kind of heat source like that will at least produce some kind of updraft to lift some

radioactivity of some kind into the into the upper atmosphere into the into into the wind where it can be carried some distance and healthy there are lots of fact that play like reading about the fire in which direction the wind is blowing the lid but what what are the chances that it weighs you know acts of cloud could we must act on japan or. i think very low i think very low for one thing the prevailing wind is not in that direction and for another thing as i say i can't think of a mechanism that would lift a significant amount of radioactivity high enough for it to travel that kind of distance so i don't think i don't think there's any really any reason for concern. for russia or for north america for that reason japan is very unstable geographically in terms of us craig and yet at the japanese have chosen to build a lot of nuclear power stations they suggested that how supplying nuclear energy do you think this will change the attitude to nuclear power in japan i'm think it is

down to there have been of course there's been quite a substantial body of opinion in japan including among sees mulla just that building nuclear plants anywhere in japan is not a good idea my personal feeling is that building nuclear plants anywhere is not a good idea for for basically economic reasons they are very expensive they tend to be unreliable they are kind of electricity which is very inflexible and difficult for an electricity system to use because you can lose a thousand megawatts in two minutes and one way in another i have never been persuaded that the economic case for nuclear power is especially convincing and in recent years of course that has been the major controversy about nuclear power investment all over the world private investors do not want to spend money on nuclear plants for quite understandable reasons they don't think they could get their money back but now the safety issue has come back again and that will

complicate things even further and of course we haven't had a big nuclear accident really since general one thousand nine hundred six so that people have been achieving you can't i was becoming safe that well well actually it's partly that but i think a much more important factor is that until quite recently nobody has built any nuclear plants and not in the west there have been no. no nuclear plants ordered in the us for example since one nine hundred seventy eight and since then and every plate ordered since one thousand nine hundred seventy four has been canceled up until the last couple of years when there is suddenly going to be an great deal of u.s. government taxpayers' money on offer as subsidies for construction of new nuclear plants and even that is not persuading the companies in the us to build them so the the the reason that people have not been objecting to nuclear power her past twenty years is that nobody's been building them so now you're going to get a situation which i think mitt might turn into a rerun of the kind of controversies of the first generation of nuclear plants in

the late sixties and seventies when the public was deeply unhappy about a lot of these plans and we may well find that happens again. thank you very much. sports is political in ways we don't often even notice especially on the level of culture where our ideas and attitudes as a society are shaped. the same the ties between professional football and the u.s. military have existed since the start of the n.f.l. back in one thousand twenty that relationship meant slaves during world war two and today that bond is stronger than ever and. we are in turn to a secure location all you don't feel i sometimes feel when i look at

a recent history has taught us the sports never just something that we just sit back and smile and sports always had an important social function and the history of american sports is no different. more news today violence is once again flared up. these are the images the world has been seeing from the streets of canada after. china operations are old today.

soumitra bryson if you remove the song from feinstein question its. stance on t.v. dot com. the critical nuclear situation in japan that goes from bad to worse as a sudden spike in radiation levels from start to withdrawn from the stricken from. all of the japanese government and says there's no immediate danger of questionable track record of telling the truth about paul's nuclear problems means not everyone is convinced. japan's nuclear concerns that's the whole asia pacific region on alert for the potential fallout that could reach beyond white and leave the smog p.b.s. to cut. the news government forces in libya are really taking ever more ground from

the rebels one was are against imposing a no fly zone above the country the u.n. is still set to discuss it it's. good to see you again and the million names doing well in the champions league aren't there you stop short of saying it's boring isn't it but you know i didn't interrupt both reaching the quarter finals of the it wasn't straightforward for them they just squeaked through chelsea and into hope to join them this season so i should say chelsea in reaction and the previews just after. hello there you're watching the sport and these are. the headline. staying alive champion zach bars trying to formulate salad back to boost that slim hopes of reaching a playoff semifinal. plus munched united an internet land of the latest seems three

of the champions league quarter finals. and california screaming top seeds for it in the in wales as jankovic schiavone and cloisters all fail to progress. will start there with the continental hockey league playoffs where defending champion beats down about your life for nearly nude photo survived in the guardian cup quarter finals previously unbeaten sound about to become the first side to reach the semi's but for different place schools in this to rise in the side of the match where it's a little square on the other contests regular season champion zab and god tied that series it too will courtesy of a hard fought three two win over most of the under a provision netting of winnetka haven't got to speak to time. football's champions league into milan the manchester united have made it through to the quarter finals that beating by nico marcell respectively on tuesday night into the defending champion squeezing power spine with a goal four minutes from time out made it three two on the night and three three

and i give it meaning into that go through to the last date on the way goals and the other time mentioned united i became us a two wanted old trafford after goal restored france how do you handle scored twice here any high praise from props so i . play for are surprised i think that to. retrieve some time to move just first of all when you come up with. some substitute . very musically more and it went a few games for us. he suggested to the physical. and it was too many minutes for. butts clearance options more tonight chelsea had a great chance of making friday's quarter final draw they take on copenhagen it's time for a break for the two go cushion from the first leg nicolas anelka is bracing denmark

giving them some daylight but please monitor color into the last he says he won't be taking his opponents lightly even though they've never won in england in this tournament. was going to be very important to move on. to the final which obviously and we have to play a lot of well then show him the open agonise are good. with that we're going to say sure that everything would be ok we're going to use. this time to little brother where the team from spain for words. programme being shown around. so few people giving the visitors much of a chance in london tonight but copenhagen manages they'll fall back and says the tie is far from over and could be decided by whether course first he had again this evening reality grid take only on the burner bad teams drew one one in their first leg tie in reale will be hoping for some revenge having been knocked out by the young at this stage last year in fact they've been dumped out of the last sixteen

in this competition for the last six seasons but glasgow is in the reno says both sides will be feeling the pressure. the pressure of. competition to snorkel competition everybody knows that. after the match one team goes through another team goes home. everybody knows that the next rance won't be another team we watch on t.v. and that's the pressure the close would use. to this not god. in our culture as well that on thursday to those in need and spartak moscow will be in action in the europa league but not all of them had the best of starts on the opening weekend of the new russian premier league season a quick look back now at what happened it is gold. live

live live. live

. i. now let's catch up with the tennis at indian wells where some big names have full in thursley u.s.

open champion kim clijsters is forced to retire from her fourth round tie with a shoulder injury either belgium won the first set against mine by telly or france six three but then back to stop the world number two essential trouble with the shoulder before travel to miami ahead of next week's trip i also as is the defending champion indian wells really need getting through which the serve losing to compared to an advantage which six pour sixty to seventy five in ten meters advantage of the ninety nine space everything was fine. that wasn't the only surprise vises of only lost in three sets this here from israel although the world number one maker and i must be asking it's strange because as although she had survived enemy scare against russian police a clear plan of. the real shocks in the mantra working better a bit chilly is one ignore. the taking the first step to love and going on to take the second six to.

do was so right is no joke of which she had an even more convincing win against latvian six club six one the score. and finally russian kick boxing fans have a new warrior to cheer on but soon he's sick or claim the biggest win of his career with pictures over a one legend here in moscow then you watched it. what does it take to become the best the answer big the best buddy has he could make all three major world and weak internals until he makes his meaning he won the elite illusion against clean to be anywhere near the summit. tonight was a goose stepping stone though the man has already been there and done that the best for us two thousand and two k. one world champ and his opponent the pair top of the field of battle for most of

them. no title is a steak however just pride and no shortage of honor. with a huge support for but hahn from his homeland the russian republic of. the karate put additional troops to hold a slight edge in the first round of choros also known as here again still able to demonstrate his dangerous punching and booted though that's what really mattered in the second the dutchman landing in a number of heavy shots although has to go held firm mostly seeking a break through with his legs crossed got a cut but the rumble continued round three one poor punch exchange followed by another the russian still keeping his feet very busy with loki x. with grouse ruling in his until the ducks and skills that's how it ended fighting spirit certainly not in question in this one however it was high single who claims an epic victory i wanted

a unanimous decision but really look much closer than that the three year old frankly showing respect and probably the greatest opponent he's ever fought against . the us that real elder cries i think in the ring is a much tougher puncher than the price we have been studying watching him preparing for. but there i didn't expect him to have such heavy hands we did our very good punchers and sparring partners but they were still no equal to him. nevertheless one of those who can't help but out in the spring rain also produced a great performance tonight world com but somewhat champion russell resides facing up against give good to have a love for the russian expired right wolfowitz. and minutes into the fight music looking his opponents out in style politics nable as they say i came i saw i conquered every fight is like a breakfast for me i just enjoy the games of this another occasion fight so

russia's rising star in the heavyweight division. based world guidebooks and jumping around of the slum they're just skills gained from his carotid bad ground giving the russian an obvious edge in the belt with one of those kicks knocking orgies down movements of that mean you finish the job i put in martial arts essential respect for the known party. and that brings us to the end of the sport for the moment and it's a blast off phed.

create a. second. class to go deeper than the kill. the remainder.